137
ENGLISH
Hint
Error
Code
Indoor Device ERV or ERV DX AWHP(Hydro kit) AHU
20
ೳ
ERV DX Main
PCB ȥ Sub PCB
communication error
Elec/heater error
ೳ
Outdoor Unit Errors
Error
Code
Description
21 DC peak
22 Max ct (CT 2): Maximum current error
23 DC link voltage (low)
24 High voltage/heat plate SW
25 Under-voltage/over-voltage
26 DC comp position error
27 PSC fault error
28 DC link voltage (high)
29 Comp over-current
30 Surge in static speed #2 compressor discharge temperature
31 CT err (low current)
32 Inverter discharge temperature error (high)
33 Surge in static speed #1 compressor discharge temperature
34 Surge in high voltage
35 Drop in low voltage
36 Low compression ratio error
37 Compression ratio limit exceeded
39
Communication error (inverter ȧ PFC)
40 Inverter CT sensor open/short
41 Inverter discharge temperature sensor open/short
42 Low voltage sensor open/short
43 Heat exchanger temperature sensor (top)
44 Outdoor air temperature sensor open/short
45 Outdoor pipe (top) sensor open/short
46 Compressor suction temperature sensor open/short
47 Static speed #1 compressor discharge temperature sensor error
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