General Troubleshooting - DURASTAR DRA1U09S1A Service Manual

2. General Troubleshooting

2.1 Error Display (Indoor Unit)
When the indoor unit encounters a recognized error, the operation lamp will flash in a corresponding series, the timer
lamp may turn on or begin flashing, and an error code will be displayed. These error codes are described in the following
table:
Operation
Timer lamp
Lamp
1 time OFF
2 times OFF
4 times OFF
5 times OFF
6 times OFF
7 times OFF
1 time ON
2 times ON
3 times ON
4 times ON
5 times ON
6 times ON
1 time FLASH
2 times FLASH
3 times FLASH
4 times FLASH
5 times FLASH
6 times FLASH
7 times FLASH
*P3:
• In heating mode, when the outdoor temperature is lower than -25°C for 1 hour, the indoor unit display error code
P3.
• If the outdoor temperature is higher than -22°C for 10 minutes and compressor stop for 1 hour or outdoor
temperature is higher than -5°C for 10 minutes, then the unit will return to work.
For other errors:
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Display
E0 Indoor unit EEPROM parameter error
E1 Indoor / outdoor units communication error
E3 The indoor fan speed is operating outside of the normal range
Indoor room temperature sensor T1 is in open circuit or has
E4
short circuited
Evaporator coil temperature sensor T2 is in open circuit or
E5
has short circuited
EC Refrigerant leak detected
F0 Overload current protection
Outdoor ambient temperature sensor T4 open circuit or
F1
short circuit
Condenser coil temperature sensor T3 is in open circuit or
F2
has short circuited
Compressor discharge temperature sensor TP open circuit
F3
or short circuit
F4 Outdoor unit EEPROM parameter error
F5 The outdoor fan speed is operating outside of the normal range
p0 IPM malfunction or IGBT over-strong current protection
p1 Over voltage or over low voltage protection
p2 High temperature protection of IPM module
P3* Outdoor ambient temperature too low
p4 Inverter compressor drive error
P5 Indoor units mode conflict (multi-zone ONLY)
Low pressure protection/high pressure protection(Only for
P6 36k model)/High temperature protection of IPM module(for
<36k models)
Error Information Solution
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