REMstar error codes

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REMstar PAP machines will present an error code on the screen when there is an error.

It will sometimes have audible beeping tones in various rhythms to indicate problems. Refer to the "see also" section of this page for more information regarding the tones.

If the machine only says "Service Required", it is usually a fatal error. This will happen with water damage that has caused a short circuit.

Below are the error codes for the REMstar xPAP machines.

Contents

E-0 - E-20

Error Code Description Probable Cause Corrective Action
E-0 NO_ERROR Reserved N/A
E-1 ERR_SOFTWARE Reserved Replace Main PCA
E-2 ERR_PROGRAM_CRC_FAILURE Defective FLASH chip Replace Main PCA
E-3 ERR_EXTERNAL_RAM_FAILURE Defective RAM chip Replace Main PCA
E-4 ERR_FIQ_STACK_OVERFLOW Defective RAM chip Replace Main PCA
E-5 ERR_FIQ_STACK_UNDERFLOW Defective RAM chip Replace Main PCA
E-6 ERR_NEST_STACK_OVERFLOW Defective RAM chip Replace Main PCA
E-7 ERR_NEST_STACK_UNDERFLOW Defective RAM chip Replace Main PCA
E-8 ERR_IRQ_STACK_OVERFLOW Defective RAM chip Replace Main PCA
E-9 ERR_IRQ_STACK_UNDERFLOW Defective RAM chip Replace Main PCA
E-10 ERR_TMR_STACK_OVERFLOW Defective RAM chip Replace Main PCA


Error Code Description Probable Cause Corrective Action
E-11 ERR_TMR_STACK_UNDERFLOW Defective RAM chip Replace Main PCA
E-12 ERR_SVC_STACK_OVERFLOW Defective RAM chip Replace Main PCA
E-13 ERR_SVC_STACK_UNDERFLOW Defective RAM chip Replace Main PCA
E-14 ERR_THREAD_STACK_OVERFLOW Defective RAM chip Replace Main PCA
E-15 ERR_ARM_UNDEFINED_INSTRUCTION_EXCEPTION Defective FLASH chip Replace Main PCA
E-16 ERR_ARM_SWI_EXCEPTION Defective FLASH chip Replace Main PCA
E-17 ERR_ARM_PREFETCH_EXCEPTION Defective FLASH chip Replace Main PCA
E-18 ERR_ARM_ABORT_EXCEPTION Defective RAM chip Replace Main PCA
E-19 ERR_ARM_RESERVED_EXCEPTION Defective FLASH chip
Defective microprocessor
Replace Main PCA
E-20 ERR_AIC_DEFAULT_HANDLER Defective FLASH chip Replace Main PCA

E-21 - E-40

Error Code Description Probable Cause Corrective Action
E-21 ERR_AIC_SPURIOUS_HANDLER Defective FLASH or RAM chip Replace Main PCA
E-22 ERR_CAL_DATA_CRC_FAILURE Improper calibration
Defective FLASH chip
Recalibrate
Replace Main PCA
E-23 ERR_INVALID_DRIFT_INDEX_AT_CAL Improper calibration
Occluded or restricted pressure tube
Defective flow sensor
Recalibrate
Replace pressure tube
Replace Main PCA
E-24 ERR_UNRECOGNIZED_CAL_VERSION_BY_SW Improper calibration
Defective FLASH chip
Recalibrate
Replace Main PCA
E-25 ERR_DRIFT_FLOW_TOO_HIGH Occluded or restricted pressure tube
Defective flow sensor
Replace Flow Tube
Replace Main PCA
E-26 ERR_UI_DISPLAY_FAILURE Defective LCD driver chip Replace Main PCA
E-27 ERR_DRIFT_PRESSURE_TOO_HIGH Occluded or restricted pressure tube
Defective pressure sensors
Replace pressure tubing
Replace Main PCA
E-28 ERR_CAL_DATA_BLANK Improper calibration
Defective FLASH chip
Recalibrate
Replace Main PCA
E-29 ERR_DRIFT_SECONDARY_PRESSURE_TOO_HIGH Occluded or restricted pressure tube
Defective pressure sensors
Replace pressure tubing
Replace Main PCA
E-30 ERR_INVALID_NVDATA_SCHEMA Normal for first time power up
Defective EEPROM
Remove & restore power
Replace Main PCA
Error Code Description Probable Cause Corrective Action
E-31 ERR_INVALID_NVDATA_LOCK Defective EEPROM Replace Main PCA
E-32 ERR_INVALID_NVDATA_CHECKSUM Normal for first time power up
Defective EEPROM
Remove & restore power
Replace Main PCA
E-33 ERR_NVDATA_STORAGE_ERROR Defective EEPROM Replace Main PCA
E-34 ERR_NVDATA_QUEUE_FULL Defective EEPROM Replace Main PCA
E-35 ERR_NVDATA_READBACK_FAILURE Defective EEPROM Replace Main PCA
E-36 ERR_NVDATA_RANGE_FAILURE Defective EEPROM Replace Main PCA
E-37 ERR_CORRUPT_RTC_VALUE Defective microprocessor Replace Main PCA
E-38 ERR_RTC_NOT_TICKING Defective microprocessor
Defective crystal
Replace Main PCA
Replace Main PCA
E-39 ERR_UI_QUEUE_FULL Defective PCA Replace Main PCA
E-40 ERR_INVALID_BIST_TEST_CALL Invalid RASP command Reissue RASP command

E-41 - E-60

Error Code Description Probable Cause Corrective Action
E-41 ERR_BIST_THREAD_LOCKED Defective PCA Replace Main PCA
E-42 ERR_ALARM_VOLTAGE_FAILURE Defective power supply Replace Main PCA
E-43 ERR_12VREF_FAILURE Defective power supply Replace Main PCA
E-44 ERR_5VREF_FAILURE Defective power supply Replace Main PCA
E-45 ERR_VBULK_FAILURE Defective power supply Replace Main PCA
E-46 ERR_NEG15VREF_FAILURE Defective power supply Replace Main PCA
E-47 ERR_FL12_SENSOR_RAILED Occluded or restricted pressure tube
Defective flow sensor
Replace flow tube
Replace Main PCA
E-48 ERR_PV2_SENSOR_RAILED Occluded or restricted pressure tube
Defective pressure sensor
Replace pressure tube
Replace Main PCA
E-49 ERR_FLASH_FAILURE Defective FLASH chip Replace Main PCA
E-50 ERR_UNRECOGNIZED_BOARD_REV Needs new software
Defective PCA
Replace Main PCA
Replace Main PCA
Error Code Description Probable Cause Corrective Action
E-51 ERR_MOTOR_FAILURE Defective motor drive chip Replace Main PCA
E-52 ERR_BLOWER_RPM_FAILED_TOLERANCE Stalled or locked blower Replace Blower
Replace Main PCA
E-53 ERR_BLOWER_OFF_CURRENT_HIGH Stalled or locked motor
Defective motor drive chip
Replace Blower
Replace Main PCA
E-54 ERR_BLOWER_ON_CURRENT_HIGH Stalled or locked motor
Defective motor drive chip
Replace Blower
Replace Main PCA
E-55 ERR_PRINTF_BUFFER_OVERFLOW Defective PCA Replace Main PCA
E-56 ERR_THERAPY_EVENT_QUEUE_FULL Defective PCA Replace Main PCA
E-57 ERR_KEYPAD_STUCK_KEY Verify all keys protrude through top
Defective Keypad
Defective pad on PCA
Align keys with top
Replace Keypad
Replace Main PCA
E-58 ERR_UNUSED_58 Reserved Reserved
E-59 ERR_UNUSED_59 Reserved Reserved
E-60 ERR_UNUSED_59 Reserved Reserved

E-61 - E-80

Error Code Description Probable Cause Corrective Action
E-61 ERR_UNUSED_61 Reserved Reserved
E-62 ERR_UNUSED_62 Reserved Reserved
E-63 ERR_WATCHDOG_FAILURE Defective microprocessor Replace Main PCA
E-64 ERR_UNEXPECTED_WATCHDOG Defective FLASH chip
Defective RAM chip
Replace Main PCA
Replace Main PCA
E-65 ERR_UNUSED_65 Reserved Reserved
E-66 ERR_RTOS_INIT_FAILURE Defective PCA Replace Main PCA
E-67 ERR_SERIAL_QUEUE_FULL Defective PCA Replace Main PCA
E-68 ERR_SNORE_SAMPLING_THREAD_LOCKED Defective PCA Replace Main PCA
E-69 ERR_MAIN_EXECUTION_THREAD_LOCKED Defective PCA Replace Main PCA
E-70 ERR_INTERNAL_RAM_FAILURE Defective microprocessor Replace Main PCA
Error Code Description Probable Cause Corrective Action
E-71 ERR_EVENT_LOG_QUEUE_FULL Defective PCA Replace Main PCA
E-72 ERR_TREND_DIV_BY_ZERO Defective RAM chip Replace Main PCA
E-73 ERR_ROLLOVER_CASE Defective RAM chip Replace Main PCA
E-74 ERR_WRONG_DISPLAY_TYPE Defective PCA Replace Main PCA
E-75 ERR_ALARM_CAPACITOR_FAILURE Defective PCA Replace Main PCA
E-76 ERR_OVER_PRESSURE Occluded or restricted tube
Defective PCA
Replace Pressure tubing
Replace Main PCA
E-77 ERR_UNDER_PRESSURE Occluded or restricted tube
Defective PCA
Replace Pressure tubing
Replace Main PCA
E-78 ERR_OVER_PRESSURE_REG Occluded or restricted tube
Defective PCA
Replace Pressure tubing
Replace Main PCA
E-79 ERR_UNDER_PRESSURE_REG Occluded or restricted tube
Defective PCA
Replace Pressure tubing
Replace Main PCA
E-80 ERR_ROTOR_LOCKED Locked Motor
Defective PCA
Replace Motor
Replace PCA

E-80 - E-86

Error Code Description Probable Cause Corrective Action
E-81 ERR_MOTOR_EDGE_MISSED Defective Motor
Defective PCA
Replace Motor
Replace PCA
E-82 ERR_MOTOR_EDGE_EXTRA Defective Motor
Defective PCA
Replace Motor
Replace PCA
E-83 ERR_MOTOR_OVERSPEED Defective Motor
Defective PCA
Replace Motor
Replace PCA
E-84 ERR_MOTOR_BRAKE Defective Motor
Defective PCA
Replace Motor
Replace PCA
E-85 ERR_MOTOR_CURRENT Defective Motor
Defective PCA
Replace Motor
Replace PCA
E-86 ERR_INVALID_ERROR_CODE Reserved Reserved

See Also

REMstar smart card error codes

For beeping errors (the machine will beep in patterns), see the PDF version of the user manual. Scroll to the "Device Alerts" section (page 12 of the manual, page 14 of the PDF).

http://respironicsremstars.respironics.com/PDF/REMstarAutoUserManual.pdf

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