Defibrillators · R Series family

ZOLL R ALS: troubleshooting and error codes

The ServiceForge knowledge base holds 16 documented symptoms for the ZOLL R ALS, with 16 ranked causes, 10 diagnostic checks with test points and expected values, and 2 error codes. Each symptom below shows its causes and the first check; the rest is one connection away. Connect ServiceForge to your AI

Symptoms

Battery capacity degraded patient safety

LED indicator shows fewer lights during capacity check; battery no longer holds full charge

Ranked causes

1. Normal capacity loss from extended use (common)

First check

Check battery capacity using Display button

Test point: Display button on battery pack
Expected: Five LEDs light for new battery; fewer LEDs as capacity decreases

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

Battery capacity or function degraded patient safety

Battery requires periodic inspection, capacity testing, and functional testing to ensure safe and reliable operation

Ranked causes

1. Periodic maintenance and testing not performed (common)

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

Battery indicates fault condition patient safety

Battery in use on ZOLL defibrillator displays fault condition or operating state preventing effective use of defibrillator

Ranked causes

1. Battery fault condition detected by defibrillator (unknown)

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

Battery pack dropped or physically damaged patient safety

SurePower Battery Pack has been subjected to impact or drop; may expose users to safety hazard

Ranked causes

1. Physical impact or drop of battery pack (unknown)

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

Battery pack exposed to prolonged direct sunlight caution

SurePower Battery Pack has been exposed to direct sunlight; risk of heating and ultraviolet damage

Ranked causes

1. Prolonged direct sunlight exposure (unknown)

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

Battery performance affected by RF interference caution

Radio frequency emissions from two-way radios may interfere with battery operation

Ranked causes

1. Operating near RF transmission equipment (occasional)

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

Defibrillator does not function due to battery fault patient safety

Battery indicates fault condition or operating state that prevents effective use of defibrillator

Ranked causes

1. Battery fault condition detected (rare)

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

Recalibration or Fault LED lights patient safety

Recalibration or Fault LED illuminates when Display button is released

Ranked causes

1. Battery fault or recalibration needed (unknown)

First check

Observe Display button status after release

Test point: Recalibration or Fault LED indicator
Expected: No Recalibration or Fault LED light; capacity and runtime display normally

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

SurePower Battery Pack casing cracked or damaged caution

Visible cracks, fractures, or damage to battery external casing detected during inspection

Ranked causes

1. Physical damage to battery casing (rare)

First check

Visual inspection of battery casing during maintenance

Test point: Entire external battery surface
Expected: No visible cracks, fractures, or damage present

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

SurePower Battery Pack display indicators inconsistent with charger or defibrillator patient safety

LEDs on battery do not match indicators on SurePower Charger Station or ZOLL defibrillator, suggesting possible fault condition

Ranked causes

1. Fault condition in battery, charger, or defibrillator (unknown)

First check

Compare display indicators on SurePower Battery Pack with SurePower Charger Station

Test point: Battery LEDs vs charger display
Expected: Indicators match

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

SurePower Battery Pack dropped or damaged patient safety

Physical damage to battery pack from accidental drop or impact; may expose users to safety hazard

Ranked causes

1. SurePower Battery Pack dropped or mechanically damaged (occasional)

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

SurePower Battery Pack fault LED illuminates patient safety

Fault LED lights for approximately 10 seconds when Display button is pressed, indicating battery fault condition detected

Ranked causes

1. Battery fault detected by onboard processing (rare)

First check

Press and release Display button on battery

Test point: Battery top
Expected: All LEDs blink, then specific LEDs illuminate for approximately 10 seconds

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

SurePower Battery Pack LEDs do not illuminate when Display button pressed patient safety

No LEDs light when Display button is pressed, indicating possible LED malfunction or battery internal fault

Ranked causes

1. LED malfunction or battery internal fault (rare)

First check

Press and release Display button on battery

Test point: All LED indicators on battery top
Expected: All LEDs should blink initially, then specific LEDs illuminate for approximately 10 seconds

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

SurePower Battery Pack low runtime indication patient safety

Left-most LED of runtime indicator blinks, signaling less than 15 minutes of battery use remaining

Ranked causes

1. Battery near depletion (common)

First check

Press and release Display button to display battery runtime

Test point: Battery runtime indicator LEDs
Expected: Up to five LEDs illuminate based on remaining run time; five LEDs=full charge, each LED represents approximately 30 minutes run time

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

SurePower Battery Pack overheating or UV damage caution

Prolonged exposure to direct sunlight causing heating and ultraviolet light damage to battery

Ranked causes

1. Prolonged exposure to direct sunlight (occasional)

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

SurePower Battery Pack recalibration LED illuminates

Recalibration LED lights for approximately 10 seconds when Display button is pressed, indicating battery needs recalibration

Ranked causes

1. Battery requires recalibration (occasional)

First check

Press and release Display button on battery

Test point: Battery top
Expected: All LEDs blink, then specific LEDs illuminate for approximately 10 seconds

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

Error codes

Code	Meaning	Trigger	Severity
`13`	Battery Over Temperature During Charge	Battery is at or above its maximum temperature for charging (140°F/60°C)	warning
`14`	Battery Under Temperature During Charge	Battery is at or below the minimum temperature for charging (32°F/0°C)	warning

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.