Hospital beds · Advanta family

Hill-Rom Advanta: troubleshooting and error codes

The ServiceForge knowledge base holds 58 documented symptoms for the Hill-Rom Advanta, with 156 ranked causes, 162 diagnostic checks with test points and expected values, and 8 error codes. Each symptom below shows its causes and the first check; the rest is one connection away. Connect ServiceForge to your AI

Symptoms

Service Required LED error indication caution

Service Required LED on footboard control panel flashes long and short signals indicating a fault code

Ranked causes

1. Code 1-2: Stuck key in key panel (occasional)
2. Code 1-4: Shorted input bus on footboard interface board (occasional)
3. Code 2-1: Slow leak in air bladder or loose hose (common)
4. Code 2-2: Continuous compressor run or faulty flow direction valve (occasional)
5. Code 2-3: Triac short on air control board (occasional)
6. Code 2-4: EEPROM communication line shorted or open (rare)
7. Code 2-5: Mattress electrical connection disconnected (occasional)
8. Code 2-6: Blown fuse or triac open circuit (occasional)
9. Code 2-7: Footboard control panel disconnected or defective cable (occasional)
10. Code 4-4: Bed position output failure on interface board (rare)

First check

Count and record LED flash pattern

Test point: Service Required LED on footboard control panel
Expected: Distinct long and short flashes indicating specific fault code
Tools: Visual observation

10 corrective actions and part numbers are in ServiceForge. Connect ServiceForge to your AI

PPM system beeps twice and flashes LEDs patient safety

PPM beeps twice and flashes LEDs on control panel when trying to arm; Position, Exiting, or Out-of-Bed LED flashing; system shuts off after arming attempt

Ranked causes

1. Bed not zeroed (Position LED flashing) (common)
2. Patient not positioned properly (occasional)
3. Incompatible mattress installed (occasional)
4. Head elevation too high (occasional)
5. Loose cable connections on scale/PPM sensor board (occasional)
6. Head sensor resistance out of spec (Position LED) (occasional)
7. Seat sensor resistance out of spec (Exiting LED) (occasional)
8. PPM micro board defective (rare)

First check

Perform zeroing procedure

Test point: Scale or Out of Bed Mode sensor
Expected: Proper zeroing completed

6 more checks with pass and fail actions, 9 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

ZoneAire Sleep Surface continuous run

ZoneAire pneumatic sleep surface operates continuously without stopping, indicated by Error Code 2-2

Ranked causes

1. Air hose pinched or disconnected (common)
2. Large hole in mattress bladder or incorrect hose routing (occasional)
3. Insufficient AC voltage to air control board (rare)
4. Flow direction switching valve malfunction (rare)
5. Air control P.C. board connector fault or board failure (rare)
6. Sensor surface cable fault (rare)
7. Bed sensor cable fault (rare)
8. Sensor control P.C. board failure (rare)

First check

Inspect mattress for pinched or disconnected air hoses

Test point: Mattress air hose connections and routing
Expected: Pinched or disconnected hoses detected or not detected
Tools: Visual inspection

9 more checks with pass and fail actions, 8 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Sleep surface sensor EEPROM fault patient safety

Error code 2-4 displayed; faulty reading due to shorted or open communication lines between control and pressure sensing circuits

Ranked causes

1. Faulty P.C. board or cable (common)
2. Faulty sensor surface cable (occasional)
3. Damaged connector J/P131 on sensor P.C. board (occasional)
4. Damaged connector J/P114 on air control P.C. board (occasional)
5. Faulty air control P.C. board (occasional)
6. Faulty sensor control P.C. board (rare)

First check

Inspect main cable connectors for damage

Test point: Connector (A) under foot section
Expected: No bent, recessed, or missing pins

4 more checks with pass and fail actions, 6 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

ZoneAire Sleep Surface LON Communication Error caution

LON communication failure detected; Error Code 2-7 displayed; air control system unresponsive

Ranked causes

1. Air control P.C. board connector J/P1 pins damaged or loose (common)
2. ZoneAire interface P.C. board connector J/P1 pins damaged (occasional)
3. Power supply control P.C. board failed (occasional)
4. Air control P.C. board failed (occasional)
5. ZoneAire interface P.C. board failed (rare)
6. LON cable failed or disconnected (rare)

First check

Inspect air control P.C. board J/P1 connector for pin damage

Test point: Connector J/P1 on air control P.C. board
Expected: All pins intact and properly seated

6 more checks with pass and fail actions, 6 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Head section does not go up patient safety

Head section fails to go up when footboard head up switch is activated

Ranked causes

1. Mechanical binding or misalignment in head section (common)
2. Head up limit switch misadjustment (occasional)
3. Head drive malfunction with excessive voltage (occasional)
4. Head motor failure (common)
5. Head capacitor failure (occasional)

First check

Manually crank head section and test motorized operation

Test point: Head section manual crank and head up switch
Expected: Head section goes up after manual crank and power re-application
Tools: Manual crank

2 more checks with pass and fail actions, 5 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Night light does not operate

Night light fails to activate when sensor is covered or switch is activated

Ranked causes

1. Night light switch not activated (common)
2. Night light sensor control misadjustment (occasional)
3. Night light bulb burned out (common)
4. Frame interface or footboard interface P.C. board failure (occasional)
5. Power supply control P.C. board failure (occasional)

First check

Cover night light sensor to activate light and verify switch LED is on

Test point: Night light sensor, footboard switch LED
Expected: Night light switch LED indicator is on
Tools: Visual observation

3 more checks with pass and fail actions, 5 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Scale display shows Err0, Err1, Err2, or Err3 caution

Scale display alternates with error codes or shows dashes and beeps; buttons may not function on power-up; errors indicate problems ranging from cable disconnection to calibration issues

Ranked causes

1. EPROM not functioning properly (occasional)
2. Analog board cable disconnected or defective (Err0) (common)
3. Memory check error (Err1) (occasional)
4. Scale has never been calibrated (Err2) (common)
5. Load beam disconnected or connection issue (Err3) (occasional)

First check

Turn bed on and observe scale display

Test point: Scale display
Expected: Four dashes (----), five beeps, buttons not functioning initially, then proper operation

2 more checks with pass and fail actions, 6 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

ZoneAire Sleep Surface Does Not Work caution

Air sleep surface non-functional or unresponsive to control commands; no operation detected

Ranked causes

1. Air control P.C. board LED DS1 not flashing (common)
2. LON cable failed or disconnected (occasional)
3. Key panel switch failed (occasional)
4. CPR limit switch assembly failed (occasional)
5. Power supply control P.C. board failed (rare)

First check

Verify LED DS1 flashing on air control P.C. board

Test point: LED DS1 on air control P.C. board
Expected: LED flashing

3 more checks with pass and fail actions, 5 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

ZoneAire Sleep Surface Triac Open caution

Air system malfunction detected; Error Code 2-6 displayed on control system

Ranked causes

1. Air control P.C. board wiring assembly broken or damaged (occasional)
2. Air control P.C. board failed (occasional)
3. Power cable failed or connections loose (occasional)
4. Fuse F2 open on power supply P.C. board (rare)
5. Power supply P.C. board failed (rare)

First check

Inspect air control P.C. board wiring assembly for damage

Test point: Connector J/P110
Expected: No broken or damaged wires

7 more checks with pass and fail actions, 5 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Bed control functions not responding to siderail switches caution

Bed does not move or respond when siderail control switches are pressed for any function

Ranked causes

1. Defective key panel or switch failed in closed position (common)
2. Defective footboard interface P.C. board (common)
3. One siderail has switch failed or shorted wire (occasional)
4. Defective footboard assembly (occasional)

First check

Inspect testport cable assembly for damage

Test point: Testport cable assembly connectors
Expected: No visible damage to connectors or cable

2 more checks with pass and fail actions, 4 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Pneumatic subsystem not functioning patient safety

Air system not inflating or adjusting sleep surface, no pressure or very low pressure in air bladders

Ranked causes

1. Air system power switch is off (common)
2. Bed not plugged into appropriate power source (common)
3. Loose or damaged pneumatic hose connections (common)
4. Loose electrical connections (occasional)

First check

Verify initial actions performed

Test point: Initial Actions checklist
Expected: All initial actions completed

4 more checks with pass and fail actions, 4 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Sleep surface mattress disconnected patient safety

Electrical connection between control circuit and pressure sensing circuit is disconnected; error code 2-5 displayed

Ranked causes

1. Bent or recessed pins on main connector or J/P connectors (common)
2. Faulty air control P.C. board (occasional)
3. Faulty mattress cable (occasional)
4. Faulty sensor control P.C. board (rare)

First check

Measure voltage at J/P114 pin 1

Test point: J/P114 pin 1 (red probe), D16 anode (black probe)
Expected: Voltage greater than 8V DC, > 8V DC
Tools: VOM

3 more checks with pass and fail actions, 4 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Foot (Hilow) section does not go up when Trendelenburg switch is activated patient safety

Foot section fails to go up when footboard Trendelenburg switch is activated, foot hilow motor does not operate

Ranked causes

1. Foot hilow function inoperative via siderail (common)
2. Frame interface or footboard interface P.C. board failure (occasional)
3. Logic control P.C. board failure (occasional)

First check

Test bed up switch on siderail for foot hilow function

Test point: Bed up siderail switch
Expected: Foot section of hilow function goes up
Tools: Visual observation

1 more check with pass and fail actions, 3 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Foot (Hilow) section does not lower when Reverse Trendelenburg switch is activated patient safety

Foot section fails to lower when footboard Reverse Trendelenburg switch is activated, foot hilow motor does not operate

Ranked causes

1. Head and knee sleep surfaces not flat (common)
2. Frame interface or footboard interface P.C. board failure (occasional)
3. Logic control P.C. board failure (occasional)

First check

Verify head and knee surfaces are flat and test siderail controls

Test point: Head/knee siderail switches
Expected: Head and knee sleep surfaces completely flat; switches operate from siderail
Tools: Visual inspection

2 more checks with pass and fail actions, 3 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Foot hilow does not go up

Foot section does not go up when bed up switch activated

Ranked causes

1. Foot hilow foot drive does not work (occasional)
2. Foot hilow foot motor does not work (occasional)
3. Foot hilow foot capacitor does not work (occasional)

First check

Measure AC voltage at J/P7

Test point: J/P7 black probe pin 10, red probe pin 4
Expected: approximately 120V AC
Tools: VOM set to V AC

1 more check with pass and fail actions, 3 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Foot hilow does not lower

Foot section does not lower when bed down switch activated

Ranked causes

1. Foot hilow foot drive does not work (occasional)
2. Foot hilow foot motor does not work (occasional)
3. Foot hilow foot capacitor does not work (occasional)

First check

Measure AC voltage at J/P7

Test point: J/P7 black probe pin 10, red probe pin 7
Expected: approximately 120V AC
Tools: VOM set to V AC

1 more check with pass and fail actions, 3 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Head (Hilow) section does not go up when Reverse Trendelenburg switch is activated patient safety

Head section fails to go up when footboard Reverse Trendelenburg switch is activated, hilow motor does not operate

Ranked causes

1. Head and knee sleep surfaces not flat (common)
2. Frame interface or footboard interface P.C. board failure (occasional)
3. Logic control P.C. board failure (occasional)

First check

Verify head and knee surfaces are flat and test siderail controls

Test point: Head/knee siderail switches
Expected: Head and knee sleep surfaces completely flat; switches operate from siderail
Tools: Visual inspection

2 more checks with pass and fail actions, 3 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Head (Hilow) section does not lower when Trendelenburg switch is activated patient safety

Head section fails to lower when footboard Trendelenburg switch is activated, while hilow motor does not operate

Ranked causes

1. Head and knee sleep surfaces not flat (common)
2. Frame interface or footboard interface P.C. board failure (occasional)
3. Logic control P.C. board failure (occasional)

First check

Verify head and knee surfaces are flat and test siderail controls

Test point: Head/knee siderail switches
Expected: Head and knee sleep surfaces completely flat; switches operate from siderail
Tools: Visual inspection

2 more checks with pass and fail actions, 3 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Head hilow does not go up

Head section does not go up when bed up switch activated

Ranked causes

1. Head hilow head drive does not work (occasional)
2. Head hilow head motor does not work (occasional)
3. Head hilow head capacitor does not work (occasional)

First check

Measure AC voltage at J/P7

Test point: J/P7 black probe pin 10, red probe pin 2
Expected: approximately 120V AC
Tools: VOM set to V AC

1 more check with pass and fail actions, 3 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Head hilow does not lower

Head section does not lower when bed down switch activated

Ranked causes

1. Head hilow head drive does not work (occasional)
2. Head hilow head motor does not work (occasional)
3. Head hilow head capacitor does not work (occasional)

First check

Measure AC voltage at J/P7

Test point: J/P7 black probe pin 10, red probe pin 1
Expected: approximately 120V AC
Tools: VOM set to V AC

1 more check with pass and fail actions, 3 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Head section does not lower patient safety

Head section fails to lower when footboard head down switch is activated

Ranked causes

1. Head drive malfunction with excessive voltage (occasional)
2. Head motor failure (common)
3. Head capacitor failure (occasional)

First check

Measure AC voltage at J/P7 between pin 10 and pin 3 while footboard head down switch is activated

Test point: J/P7, pin 10 (black) to pin 3 (red)
Expected: approximately 120V AC
Tools: VOM

1 more check with pass and fail actions, 3 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Knee section does not go up

Knee section does not go up when foot up switch activated

Ranked causes

1. Knee drive does not work (occasional)
2. Knee motor does not work (occasional)
3. Knee capacitor does not work (occasional)

First check

Measure AC voltage at J/P12

Test point: J/P12 black probe pin 4, red probe pin 1
Expected: approximately 120V AC
Tools: VOM set to V AC

1 more check with pass and fail actions, 3 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Knee section does not lower

Knee section does not lower when foot down switch activated

Ranked causes

1. Knee drive does not work (occasional)
2. Knee motor does not work (occasional)
3. Knee capacitor does not work (occasional)

First check

Measure AC voltage at J/P12

Test point: J/P12 black probe pin 4, red probe pin 2
Expected: approximately 120V AC
Tools: VOM set to V AC

1 more check with pass and fail actions, 3 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Siderail difficult to raise or lower caution

Siderail movement stiff, frozen, or requires excessive force

Ranked causes

1. Bent siderail strap (occasional)
2. Misaligned slide rods (occasional)
3. Inadequate lubrication or scale buildup (common)

First check

Inspect siderail strap condition

Test point: Strap (I)
Expected: Strap straight and not bent

2 more checks with pass and fail actions, 3 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Sleep surface triac open patient safety

Sleep surface valves do not operate; pump operates but valves fail; error code 2-6 displayed

Ranked causes

1. Broken or damaged transformer wiring assembly (common)
2. Faulty air control P.C. board (common)
3. Blown fuse F2 on air control P.C. board (occasional)

First check

Disconnect sensor control surface cables and run air system self-diagnostic

Test point: Sleep surface; air system diagnostic
Expected: Pump passes but all valves fail

3 more checks with pass and fail actions, 3 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

ZoneAire Sleep Surface slow leak

ZoneAire pneumatic sleep surface exhibits slow air leak, indicated by Error Code 2-1

Ranked causes

1. Air hose connection loose or damaged (common)
2. Air bladder hole or seam leak in mattress (occasional)
3. Air control P.C. board failure (rare)

First check

Activate auto firm mode and inspect air hoses for obvious leaks

Test point: Mattress air hose connections and length
Expected: Visible leaks detected or no leaks found
Tools: Visual inspection, hands

2 more checks with pass and fail actions, 3 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Calibration: Head Limit Switch caution

Adjustment of head limit switch package position and alignment with slide switch to ensure proper bed operation and prevent equipment damage

Ranked causes

1. Limit switch misalignment or improper positioning (common)
2. Over-tightened limit switch mounting screws (occasional)

First check

Verify limit switch configuration

Test point: Limit switch package against figure 4-27
Expected: Configuration matches figure 4-27

3 more checks with pass and fail actions, 2 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Calibration: Junction Box P.C. Board replacement

Removal and replacement of junction box P.C. board (B) including top cover (K) and bottom cover (L)

Ranked causes

1. Junction box P.C. board requires replacement (unknown)
2. Post-replacement functional verification required (unknown)

First check

Disconnect siderail communication cable connectors

Test point: Connectors (E) on junction box
Expected: Connectors disconnected

5 more checks with pass and fail actions, 6 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Hilow foot limit switch misalignment after installation caution

Limit switch tabs not centered in slots; switch mounting loose or over-tightened; improper operation of limit switch

Ranked causes

1. Limit switch assembly tabs not centered in torque cage slots during installation (common)
2. Limit switch mounting screws over-tightened (occasional)

First check

Verify limit switch assembly (N) tabs are centered in torque cage (Q) slots

Test point: Tabs on limit switch assembly (N)
Expected: Tabs centered in slots

1 more check with pass and fail actions, 2 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Logic control board failure high voltage

Bed logic functions malfunction, controls unresponsive

Ranked causes

1. Loose logic control board connectors (occasional)
2. Defective logic control board (rare)

First check

Verify logic control connector seating

Test point: Connectors (A) to logic control board (B)
Expected: All connectors fully inserted and latched

2 corrective actions and part numbers are in ServiceForge. Connect ServiceForge to your AI

Power supply control board malfunction high voltage

Bed power or control functions not operating

Ranked causes

1. Loose or corroded connector (occasional)
2. Defective power supply control board (rare)

First check

Inspect power supply connectors

Test point: Connectors (A) to power supply board (B)
Expected: Connectors fully seated and secure

2 corrective actions and part numbers are in ServiceForge. Connect ServiceForge to your AI

PPM pressure sensor not responding caution

Pressure position monitoring (PPM) sensor does not register pressure changes or returns invalid resistance readings

Ranked causes

1. PPM sensor resistance below 100K ohms when unpressurized (common)
2. PPM sensor does not decrease resistance under pressure (occasional)

First check

Unplug PPM sensor cable from micro P.C. board

Test point: PPM sensor connector on micro P.C. board
Expected: Cable disconnected

2 more checks with pass and fail actions, 2 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Siderail controls not responding caution

Siderail switches or speaker malfunction after service

Ranked causes

1. Disconnected cables or loose connectors (common)
2. Improperly installed screw covers (occasional)

First check

Verify cable connections at control switches

Test point: Caregiver bed position switch (D) connector
Expected: Cables securely connected

1 more check with pass and fail actions, 2 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Speaker not producing sound

Siderail speaker silent or no audio output

Ranked causes

1. Disconnected speaker wires (common)
2. Loose or missing speaker nuts (occasional)

First check

Inspect speaker wire connections

Test point: Speaker (I) wire terminals
Expected: Wires securely connected to speaker terminals

1 more check with pass and fail actions, 2 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Bed not plugged into appropriate power source

Bed is not connected to a suitable electrical power outlet

Ranked causes

1. Bed not connected to power (common)

First check

Verify bed power connection

Test point: Power outlet and bed plug
Expected: Bed plugged into appropriate power source

1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI

Brake light switch not working

Brake light does not illuminate when brakes are applied

Ranked causes

1. Brake light switch failure (unknown)

First check

Test brake light operation

Test point: Brake light indicator
Expected: Light illuminates when brakes applied

1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI

Calibration: CPR Release Handle caution

CPR release handle cable adjustment to establish correct 1/8" gap between cable ball stops and latch release bar for proper CPR mechanism operation.

Ranked causes

1. CPR cable adjustment required for proper release mechanism (unknown)

First check

Remove head end covers

Test point: Head end covers
Expected: Covers removed to access CPR mechanism

3 more checks with pass and fail actions, 1 corrective action, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Calibration: Hilow Head Drive Screw Assembly caution

Replacement and post-installation verification of hilow head drive screw assembly alignment and bed function

Ranked causes

1. Drive screw assembly misalignment with slide switch (common)

First check

Install hilow head drive screw assembly

Test point: Screw (I) and keyhole slot
Expected: Screw (I) engaged in keyhole slot

4 more checks with pass and fail actions, 1 corrective action, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Calibration: Hilow Head Limit Switch high voltage

Adjustment and alignment of hilow head limit switch assembly with drive screw and lift nut torque cage to ensure proper bed height control and prevent damage

Ranked causes

1. Hilow limit switch misalignment with drive screw (common)

First check

Support head end of bed with 2 x 4 lumber

Test point: Intermediate frame (B) and head lift arm assembly (C)
Expected: Wooden 2 x 4 (A) placed between intermediate frame and head lift arm assembly

4 more checks with pass and fail actions, 1 corrective action, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Calibration: Knee Limit Switch Assembly caution

Knee limit switch tabs must be centered in slots to ensure proper knee section operation and prevent bed damage during movement.

Ranked causes

1. Knee limit switch misaligned after replacement (common)

First check

Visually inspect tabs (G) alignment in slots

Test point: Tabs (G) in relation to slots on limit switch package
Expected: Tabs (G) centered in slots

1 more check with pass and fail actions, 1 corrective action, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Calibration: Weigh Load Beam caution

Installation and torque specification for load beam replacement on Advanta bed scale system

Ranked causes

1. Load beam replacement procedure (common)

First check

Verify torque on load beam screws (G)

Test point: Screws (G) securing load beam (F) to weigh frame (C)
Expected: 90 in-lb + 10 in-lb (10.2 N•m + 1.1 N•m), +10 in-lb
Tools: Torque wrench 50-150 in-lb

1 more check with pass and fail actions, 11 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Foot end cover removal and replacement high voltage

Procedure to remove and reinstall the foot end cover assembly including tie-down and screw securement.

Ranked causes

1. Foot end cover removal required for access or repair (unknown)

First check

Raise knee section before starting removal

Test point: Knee section actuator
Expected: Knee section at highest point

5 more checks with pass and fail actions, 2 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Foot end of bed falls during hilow foot drive assembly removal patient safety

Bed foot end unsupported during service; potential personal injury or equipment damage; intermediate frame collapses onto work area

Ranked causes

1. 2x4 lumber support not placed between intermediate frame and foot lift arm assembly (common)

First check

Confirm 2x4 support (A) is positioned between intermediate frame (B) and foot lift arm assembly (C)

Test point: Support location between frames
Expected: 2x4 inserted horizontally between intermediate frame and foot lift arm

1 more check with pass and fail actions, 1 corrective action, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Footboard control panel switches or LEDs not functioning caution

Footboard control panel switch LEDs do not illuminate or switches do not register when pressed

Ranked causes

1. Motor power is not off (Motor Power Off LED not illuminated) (common)

First check

Verify motor power is off before conducting panel test

Test point: Motor Power Off LED on footboard control panel
Expected: Motor Power Off LED illuminated
Tools: Visual observation

1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI

Footboard removal and replacement high voltage

Procedure to safely remove and reinstall the footboard assembly including safety pins and connector alignment.

Ranked causes

1. Footboard removal required for service or repair (unknown)

First check

Verify bed is unplugged from power source

Test point: Power plug
Expected: Bed unplugged

3 more checks with pass and fail actions, 2 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Headboard removal and replacement

Procedure to remove and reinstall the headboard assembly using guide arrows for alignment.

Ranked causes

1. Headboard removal required for service or access (unknown)

First check

Align headboard sockets with bed frame posts using guide arrows

Test point: Headboard sockets (B) and bed frame posts (C)
Expected: Sockets aligned with posts using guide arrows

1 more check with pass and fail actions, 2 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Hilow foot drive screw assembly misaligned after installation patient safety

Hilow foot drive screw not properly seated in keyhole slots; limit switch and drive screw misaligned; potential severe damage to bed mechanism

Ranked causes

1. Hilow foot drive screw assembly installed without proper keyhole slot alignment (common)

First check

Verify limit slide switch (S) and drive screw (T) alignment on lift nut (U) and torque cage (P)

Test point: Limit slide switch (S) and drive screw (T)
Expected: Both components fastened to lift nut (U) and torque cage (P) and aligned

1 more check with pass and fail actions, 1 corrective action, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Junction Box P.C. Board diagnostic procedure

Step-by-step diagnostic procedure for junction box P.C. board removal and replacement

Ranked causes

1. P.C. board component failure or malfunction (unknown)

1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI

Key Stuck Closed caution

Key panel stuck in closed position; Error Code 1-2 displayed; control locked

Ranked causes

1. Key panel switch mechanism failed (common)

First check

Replace key panel and test operation

Test point: Key panel switch
Expected: Key operates freely; control responsive

1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI

Mechanical parts damaged or operating incorrectly caution

Visible damage to mechanical components or abnormal operation when electrical controls are activated

Ranked causes

1. Damaged mechanical component (unknown)

First check

Operate bed electrical controls individually

Test point: Associated mechanical parts
Expected: Operating correctly without damage or unusual movement

1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI

Mechanical parts operating with unusual noise caution

Abnormal or unusual noise detected from mechanical components during control operation

Ranked causes

1. Damaged mechanical component producing noise (unknown)

First check

Operate bed electrical controls while listening

Test point: Mechanical components
Expected: Operating correctly without unusual noise

1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI

Patient Position Monitor (PPM) does not function patient safety

PPM system does not arm; does not activate when patient weight is between 70-450 lb; bed needs zeroing on delivery

Ranked causes

1. Bed not zeroed upon delivery (common)

First check

Verify patient weight is in operating range

Test point: Patient on bed
Expected: Patient weight between 70 lb and 450 lb (32 kg to 204 kg)

2 corrective actions and part numbers are in ServiceForge. Connect ServiceForge to your AI

Removal and replacement: Footboard Interface P.C. Board high voltage

Removal and installation of footboard interface P.C. board with proper handling and antistatic precautions

Ranked causes

1. P.C. board replacement required (common)

8 corrective actions and part numbers are in ServiceForge. Connect ServiceForge to your AI

Removal and replacement: Junction Box P.C. Board high voltage

Initial steps for removing and installing junction box P.C. board with cable disconnection

Ranked causes

1. P.C. board replacement required (common)

3 corrective actions and part numbers are in ServiceForge. Connect ServiceForge to your AI

Removal and replacement: Patient Position Monitor (PPM) Sensor high voltage

Removal and installation of PPM sensors including cable routing and drive rivet securing

Ranked causes

1. PPM sensor replacement required (common)

19 corrective actions and part numbers are in ServiceForge. Connect ServiceForge to your AI

Removal and replacement: Scale/PPM Control P.C. Board high voltage

Removal and installation of Scale/PPM control P.C. board with proper antistatic handling

Ranked causes

1. P.C. board replacement required (common)

8 corrective actions and part numbers are in ServiceForge. Connect ServiceForge to your AI

Sleep surface triac short caution

Valve energized all of the time; error code 2-3 displayed

Ranked causes

1. Air control P.C. board triac short (common)

First check

Air control P.C. board replacement

Test point: Board assembly
Expected: Error resolved after board replacement

1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI

Error codes

Code	Meaning	Trigger	Severity
`1-2`	Key Stuck Closed	Key panel switch mechanism failure or stuck in closed position	warning
`2-1`	ZoneAire Sleep Surface slow leak	Pneumatic system detects slow air pressure loss from mattress bladder or hose connection	warning
`2-2`	ZoneAire Sleep Surface continuous run	Pneumatic system operates continuously without stopping or reaching target pressure	warning
`2-3`	Sleep surface triac short	Valve energized continuously during operation	error
`2-4`	Sleep surface sensor EEPROM fault	Faulty reading detected on communication lines between control and pressure sensing circuits	error
`2-5`	Sleep surface mattress disconnected	Loss of electrical connection between control and pressure sensing circuits	error
`2-6`	ZoneAire Sleep Surface Triac Open	Triac failure in air control circuit	error
`2-7`	ZoneAire Sleep Surface LON Communication Error	LON communication failure between air control and main system	error

Likely causes and actions for each code are in ServiceForge. Connect ServiceForge to your AI

Community

0 fixes logged by technicians through their AI, with outcomes, for this model.

ServiceForge knowledge base record. Field-unverified unless technicians confirmed it. A teaching summary of the record, not a service manual. Export 2026-10-14.