Table 5.1: Error code(continues)
The wireless temperature sensor short-circuits or cuts
off
The external room temperature sensor short-circuits
or cuts off
Tcp (pre-cooled fresh air temperature sensor)
short-circuits or cuts off
Horsepower code setting error
Tph (pre-heated fresh air temperature sensor)
short-circuits or cuts off
AHU Kit fan control input signal DIP setting error
TA (outlet air temperature sensor) short-circuits or
cuts off
Address code not detected
Outlet air humidity sensor fault
Motor failed more than once
Return air humidity sensor fault
IPM (fan module) overcurrent protection
Upper wet bulb sensor fault
Instantaneous overcurrent protection for phase current
Lower wet bulb sensor fault
R32 refrigerant leakage sensor fault
T2A (heat exchanger inlet temperature sensor)
short-circuits or cuts off
Phase current sample bias error
T2 (heat exchanger middle temperature sensor)
short-circuits or cuts off
Motor and IDU are unmatched
T2 (heat exchanger middle temperature sensor)
overtemperature protection
IPM and IDU are unmatched
T2B (heat exchanger outlet temperature sensor)
short-circuits or cuts off
Main control board EEPROM fault
Motor blocking protection
IDU display control board EEPROM fault
Speed control mode setting error
Phase lack protection of motor
5.2 Operating Status Codes
Table 5.2:Operating Status Codes
Oil return or preheating operation
Mode conflict (V8 communication protocol adopted)
Main control program upgrading
Static pressure detection
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