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MR850 Technical Manual * Revision J * Issued November 2005 * Ref. 185041340 (185041713 internal)
27
6.3 “See Manual” Error Codes
The following is an explanation of the error codes that are displayed in conjunction with the See
Manual indicator flashing. A code is not displayed if the microprocessor has stopped
functioning (see technical problems - section 6.2).
Error Description of Fault
E00 No fault
E02 Microprocessor stack overflow
E03 RAM fault
E04 ROM fault
E05 EEPROM version older than ROM version. Update EEPROM. Refer to Section 7.2.6
E06 EEPROM version newer than ROM version – (old software). Contact Fisher & Paykel
Healthcare
E07 Model mismatch with software, contact your Fisher & Paykel Healthcare
representative.
NOTE: included in software version 7.14 onward, except 7.21.
E10 Temperature circuit calibration out of range: Range Amp 0: 25.5 °C
E11 Temperature circuit calibration out of range: Range Amp 0: 65.0 °C
E12 Temperature circuit calibration out of range: Range Amp 1: 25.5 °C
E13 Temperature circuit calibration out of range: Range Amp 1: 34.5 °C
E14 Temperature circuit calibration out of range: Range Amp 2: 34.5 °C
E15 Temperature circuit calibration out of range: Range Amp 2: 44.6 °C
E16 Temperature circuit calibration out of range: Range Amp 3: 65.0 °C
E20 Heater wire circuit has malfunctioned, heater can not be energized:
- Heater plate thermal cutout tripped (section 7.2.5)
- Heater wire fuse (F2) is open circuit (section 7.2.2)
- Heater wire triac, or heater wire relay is open circuit
E21 Heater wire circuit has malfunctioned, heater either can not be de-energized or
monitoring circuit has failed :
- Heater wire triac has shorted
- Heater wire sense circuit has failed
E23 Heater wire voltage measurement circuit faulty
E25 Transistor Q17 is not turning on
E26 Transistor Q16 is not turning on
E27 The heater wire relay is short circuited
E28 Mains voltage measurement is uncalibrated (section 8.1.3)
E29 The heater plate thermistor is short circuited
E2A The heater plate thermistor is open circuit
E2C Heater plate element circuit has malfunctioned is not turning on:
- Element is open circuit
- Heater plate triac or driver faulty
- Heater plate relay is faulty
E2D The heater plate element is not turning off. Heater plate triac circuit faulty.
E30 Power (on/off) button stuck on
E31 Mute button stuck on
E32 Mode button stuck on
E40 Unit not functional tested at time of manufacture