Hitachi RAS-5HVRNM1E Service Manual page 301

8 Troubleshooting
Cause of Indoor Unit stoppage (20)
Indication
Operation OFF, Power OFF
00
01 Thermo-OFF
Alarm
02
Freeze Protection Overheating Protection
03
Instantaneous Power Failure at Outdoor Unit
05
06 Instantaneous Power Failure at Indoor Unit
07 Stoppage of Cooling Operation due to Low Outdoor Air Temperature
Stoppage of Heating Operation due to High Outdoor Air Temperature
Demand thermo OFF
10
Retry for Pd Increase Prevention
13
15 Vacuum / Discharge Gas Temperature Increase Retry
16 Retry Due to Discharge Gas SUPERHEAT Decrease
IPM Error Retry, Instantaneous Over Current of Inverter Retry, Electronic Thermal Activation of
17
Inverter Retry, Abnormal Current Sensor of Inverter Retry
Retry due to Inverter Voltage Decrease
18
Retry due to Inverter Overvoltage
Other Retry
19
Different Operation Mode between Indoor / Outdoor Units
20
(Only for Individual Twin / Triple / Quad Types)
Forced Thermo-OFF
21
(Only for Simultaneous Twin / Triple / Quad Types)
Forced Thermo-OFF
22
(During Compressor Pre-heating)
Thermo-OFF during Energy Saving Operation Mode
24
Cancellation of Forced Thermo OFF
Turn ON the power source and wait for more than 30 seconds. Then press PSW1 and PSW3 simultaneously for more than
3 seconds.
Forced Thermo-OFF (Indoor Unit Error Code 22) will be cancelled.
However, this function may damage the compressor, use only on inevitable occasion.
• In case of using the remote control switch (PC-ART), the cancellation is also available with it.
• When "Operation Lock" indication flashes on the remote control LCD, press FAN SPEED and LOUVER switches
simultaneously for more than 3 seconds.
• "Operation Lock" Indication is disappeared and operation is available.
293
SMGB0060 rev. 1- 12/2010
Contents
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