For installers and professionals
Fuse burned Check and change the fuse
The breaker is off Check and turn on the breaker
Fan running but with
insufficient heating
evaporator blocked Remove the obstacles
Air outlet blocked Remove the obstacles
3 minutes start delay Wait patiently
Display normal, but no
heating
Set temp. too low Set proper heating temp.
3 minutes start delay Wait patiently
If above solutions don’t work, please contact your installer with detailed information and your model
number. Don’t try to repair it yourself.
ATTENTION
！
Please don’t try to repair the heat pump by yourself to avoid any risk.
4. Failure code
NO. Display Failure description
1 E1 High pressure protection
2 E2 Low pressure protection
3 E3 No water protection (not failure)
4 E4 3 phase sequence protection (three phase only)
5 E5 Not failure, power supply excesses operation range
6 E6 Excessive temp difference between inlet and outlet
water(Insufficient water flow protection)
7 E7 Water outlet temp too high or too low protection
8 E8 High exhaust temp protection
9 EA cooling coil pipe(heat exchanger)overheat protection
10 Eb Ambient temperature too high or too low protection
11 Ed Anti-freezing reminder (not failure )
12 P0 Controller communication failure
13 P1 Water inlet temp sensor failure
14 P2 Water outlet temp sensor failure
15 P3 Gas exhaust temp sensor failure
16 P4 Cooling coil pipe (heat exchanger) temp sensor failure at
cooling mode
17 P5 Gas return temp sensor failure
18 P6 Heating coil pipe (evaporator) temp sensor failure
19 P7 Ambient temp sensor failure
20 P8 Cooling plate sensor failure
21 P9 Current sensor failure
22 PA Restart memory failure
23 F1 Compressor drive module failure
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