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Autoclave sterilizers

Tuttnauer 1730: troubleshooting and error codes

The ServiceForge knowledge base holds 30 documented symptoms for the Tuttnauer 1730, with 64 ranked causes, 15 diagnostic checks with test points and expected values, and 0 error codes. Each symptom below shows its causes and the first check; the rest is one connection away. Connect ServiceForge to your AI

Symptoms

Chamber not filling with water

Water does not enter or fill the chamber during cycle

Ranked causes

  1. 1. Low water level in reservoir (common)
  2. 2. Obstruction at bottom of reservoir blocking pickup tube (occasional)
  3. 3. Water sensor contaminated (occasional)
  4. 4. Manual inlet valve not functioning (occasional)

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

Machine does not respond

Equipment does not react to user input or controls

Ranked causes

  1. 1. Main switch not in 'On' position (common)
  2. 2. Power cord not properly connected (common)
  3. 3. Reset button on cut-out thermostat needs activation (occasional)
  4. 4. Circuit breaker has tripped (occasional)

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

Machine is not responding to controls caution

Machine does not respond to power button or control inputs; appears off or inactive

Ranked causes

  1. 1. Main switch in OFF position (common)
  2. 2. Power cord not connected or loose (common)
  3. 3. Reset button on cut-out thermostat tripped (occasional)
  4. 4. Circuit breaker has tripped (occasional)
First check

Verify main power switch position

Test point
Front panel main switch
Expected
Switch in ON position

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

Wrapped items come out wet

Sterilized items emerge from cycle with moisture remaining

Ranked causes

  1. 1. Drying cycle too short (common)
  2. 2. Autoclave overloaded (common)
  3. 3. Chamber strainer clogged (occasional)
  4. 4. HEPA filter clogged (occasional)

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

'High Pres' displayed caution

Display shows 'High Pres' (high pressure) message

Ranked causes

  1. 1. Air jet is clogged (common)
  2. 2. Heating elements cycling improperly (occasional)
  3. 3. Temperature sensor (PT100) faulty or dirty (occasional)

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

'Low Pres' displayed

Display shows 'Low Pres' (low pressure) message

Ranked causes

  1. 1. Water level electrode dirty or contaminated (common)
  2. 2. Door not fully closed or gasket not seated (common)
  3. 3. Machine not level (occasional)

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

Instruments are rusting patient safety

Treated instruments show rust spots or pitting corrosion

Ranked causes

  1. 1. Minerals in water used for rinsing (common)
  2. 2. Dissimilar metals mixed in load (occasional)
  3. 3. Surface contamination (not true rust) (common)

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

Low Pressure warning displayed patient safety

Display shows 'Low Pres' message; chamber pressure is below normal operating level

Ranked causes

  1. 1. Water level electrode fouled or contaminated (common)
  2. 2. Door not fully closed or door gasket not seated (common)
  3. 3. Machine not level (occasional)
First check

Inspect and clean water level electrode

Test point
Water level electrode inside chamber vessel
Expected
Electrode clean, free of mineral deposits or fouling

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

Spore tests failing or indicator strips not turning patient safety

Sterilization not working: biological indicators fail and chemical strips do not color

Ranked causes

  1. 1. Air jet clogged (common)
  2. 2. Sterilization time or temperature set incorrectly (common)
  3. 3. Autoclave too heavily loaded (occasional)

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

Wraps come out burned

Sterilized wrapped items show burn marks or charring

Ranked causes

  1. 1. Water sensor dirty (common)
  2. 2. Wall outlet voltage too high (occasional)
  3. 3. Items touching chamber walls or bottom (occasional)

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

'High Temp' displayed caution

Display shows 'High Temp' (high temperature) message

Ranked causes

  1. 1. Bad temperature sensor (common)
  2. 2. Heating elements cycling improperly (occasional)

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

'Low Heat' displayed

Display shows 'Low Heat' message

Ranked causes

  1. 1. Air trap in water reservoir not clear (common)
  2. 2. Improper sterilization load (occasional)

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

'Low Temp' displayed

Display shows 'Low Temp' (low temperature) message

Ranked causes

  1. 1. See Low Water problem conditions (common)
  2. 2. Sterilization time set too long causing chamber to run dry (occasional)

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

'Low Water' displayed

Display shows 'Low Water' message during operation

Ranked causes

  1. 1. Door not fully closed or gasket not seated (common)
  2. 2. Machine not level (occasional)

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

Autoclave takes too long to heat up

Heat up phase of sterilization cycle is significantly slower than normal

Ranked causes

  1. 1. Air jet clogged (common)
  2. 2. Improper wall outlet voltage (occasional)

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

Drying takes too long

Drying cycle duration is longer than expected

Ranked causes

  1. 1. Autoclave overloaded (common)
  2. 2. HEPA filter clogged or needs replacement (common)

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

Low Heat warning displayed patient safety

Display shows 'Low Heat' message; sterilization temperature may be insufficient

Ranked causes

  1. 1. Air trap clogged or air present in water reservoir (common)
  2. 2. Insufficient sterilization load (occasional)
First check

Inspect air trap in water reservoir

Test point
Water reservoir air trap
Expected
Air trap is clear and free of blockages

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

Low Temperature warning displayed patient safety

Display shows 'Low Temp' message; sterilization chamber temperature is below required level

Ranked causes

  1. 1. Door not fully closed or door gasket leaking steam (common)
  2. 2. Sterilization time set too long; chamber running dry (occasional)
First check

Verify door is fully closed and gasket seated

Test point
Door latch, position, and gasket
Expected
Door fully closed with latch engaged; gasket seated with no steam leakage

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

Low Water warning displayed patient safety

Display shows 'Low Water' message; water level in reservoir is low or door seal problem exists

Ranked causes

  1. 1. Door not fully closed or door gasket not seated (common)
  2. 2. Machine not level (occasional)
First check

Verify door is fully closed

Test point
Door latch and position
Expected
Door fully closed with no gaps; latch engaged

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

Printer does not print

Printer produces no output and does not advance paper

Ranked causes

  1. 1. Paper not inserted in printer (common)
  2. 2. Printer or electronics fault (occasional)

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

Chamber very dirty

Interior chamber has visible dirt, discoloration, or deposits

Ranked causes

  1. 1. Inadequate chamber cleaning (common)

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

Drain is clogged

Drain line blocked preventing water from draining properly

Ranked causes

  1. 1. Debris in drain line (common)

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

Exhaust stage takes very long time

Exhaust cycle during sterilization runs much longer than expected

Ranked causes

  1. 1. Running 'For all glassware intended for sterilization' program (common)

Keyboard does not respond

Keyboard input is not registered by the system

Ranked causes

  1. 1. Program running may need abort (common)

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

Loud noise coming from reservoir caution

Abnormal loud noise originates from water reservoir

Ranked causes

  1. 1. Sterilization temperature set too high (common)

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

Machine leaking at door caution

Water or steam leaks from door seal during operation

Ranked causes

  1. 1. Door not tightened or gasket not sealing (common)

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

Printer feed button continuously activates

Printer feeds paper continuously when machine is switched on

Ranked causes

  1. 1. Printer feed button stuck (common)

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

Printer prints but nothing appears on paper

Printer output is blank even though paper advances

Ranked causes

  1. 1. Paper mounted incorrectly or wrong side forward (common)

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

Trays and rack very dirty

Autoclave internal trays and racks have visible dirt or deposits

Ranked causes

  1. 1. Trays and rack need cleaning (common)

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

Water does not exit chamber due to clogged outlet strainer

Water remains in chamber because outlet strainer is blocked

Ranked causes

  1. 1. Outlet strainer clogged with debris (common)

1 corrective action and part numbers 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.