Haier HPU-42CV03 Operation And Installation Manual page 21

When problems occur
1. Errors display
Failure description
Room temp. sensor abnormal
Indoor coil temp. sensor abnormal
Outdoor temp. sensor abnormal
Outdoor coil temp. sensor or
discharge temp. sensor abnormal
The phase sequence of power abnormal
or over current malfunction
Outdoor high pressure or low pressure
abnormal
The communication between indoor
PCB and control board abnormal
The communication between indoor
PCB and outdoor PCB abnormal
2. Power supply
The parameter of power cord is over 5G 2.5mm
The parameter of connect cord is 4G 0.75mm
Air conditioner must use an exclusive line (over 30A)
When installation air conditioner in a wet place, try to use a circuit breaker against
current leakage.
For installation in other places, use circuit breaker as far as possible.
The breaker of the air conditioner should be all-pole switch ; and the distance between
its two contacts should be no less than 3 mm.
Such means for disconnection must be incorporation in the fixed wiring
3.Charge-over switch.
For HPU-42CV03,HPU-48CV03 the charge-over switch is set:
BM1: 1 ON 2 ON
BM2: 1 OFF 2 OFF 3 OFF 4 OFF
BM3: 1 OFF 2 OFF 3 OFF 4 OFF
BM4: 1 OFF 2 ON
For HPU-42HV03,HPU-48HV03 the charge-over switch is set:
BM1: 1 OFF 2 ON
BM2: 1 OFF 2 OFF
BM3: 1 OFF 2 OFF
BM4: 1 OFF 2 ON
3 OFF 4 OFF
3 OFF 4 OFF
Code on LCD display
2 .
2 .
19
E1
E2
E3
E4
E5
E6
E8
E9