Gree GRS-CQ8.0Pd/NaEK Service Manual page 114

33 Heat pump-water flow switch
34 Solar kit-water flow switch
35 Swimming pool-water flow switch
36 Welding protection of the auxiliary heater 1
37 Welding protection of the auxiliary heater 2
38 Welding protection of the water tank heater
39 Under-voltage DC bus or voltage drop error
40
41 AC current protection (input side)
42
43
44
45
46
47 Compressor over-current
48
49 Sensing circuit error or current sensor error
50
51
52
53 Radiator or IPM or PFC module overtemperature
54 Radiator or IPM or PFC module temperature sensor error
55
56 Incorrect AC voltage input
57 Drive board temperature sensor error
58 AC contactor protection or input zero crossing error
59 Temperature drift protection
Current sensor connection protection (current sensor not
60
connected to phase U/V)
61 Communication error to the outdoor unit
62 Communication error to the indoor unit
63 Communication error to the drive
64
Test Operation & Troubleshooting & Maintenance
Over-voltage DC bus
IPM defective
PFC defective
Start failure
Phase loss
Drive module resetting
Overspeed
Desynchronizing
Compressor stalling
Communication error
Charging circuit error
Solar kit-superheating
HP-Water SW
SL-Water SW
SW-Water SW
Auxi. heater 1
Auxi. heater 2
Auxi. -WTH
DC under-vol.
DC over-vol.
AC curr. pro.
IPM defective
FPC defective
Start failure
Phase loss
Driver reset
Com. over-cur.
Overspeed
Current sen.
Desynchronize
Comp. stalling
drive-main com.
Overtemp.-mod.
T-mod. sensor
Charge circuit
AC voltage
Temp-driver
AC contactor
Temp. drift
Sensor con.
ODU Com.
IDU Com.
Driver Com.
Solarsuperheat
109
Ec
F2
F1
EH
EH
EH
PL
PH
PA
H5
Hc
Lc
LD
P6
P0
P5
LF
Pc
H7
LE
P8
P7
Pu
PP
PF
P9
PE
PD
E6
E6
E6
F6