Gree GRS-CP11Pd/NhA-D - Drive System Components; Drive Control Board Description and Pinouts

Heat Pump Pool Heater
27
Error Code Error Name Possible Causes Solution
L6 Out of operating range
The ambient temperature
exceeds the operating range of
the unit.
—
Ec Water flow switch protection
Insufficient water flow;
Water flow switch fault;
Loose water flow switch wire.
Automatic
recovery after
fault repair.
C5 Jumper cap fault
Wrong jumper cap;
Poor contact of jumper cap.
6.5 Fault Information Table (Drive Board)
S/N
Error
Code
Error Name S/N
Error
Code
Error Name
1 EE EPROM memory chip fault 21 AA
AC current protection (input
side) of variable frequency
external fan
2 H5
Drive IPM module protection of
variable frequency compressor
22 AC
Start failing of variable
frequency external fan
3 HC
Drive PFC protection of
variable frequency compressor
23 Ad
Phase loss protection of
variable frequency external
fan
4 H7
Out-of-step protection of
variable frequency compressor
24 AE
Drive current detection
circuit fault of variable
frequency external fan
5 Lc
Start failing of variable
frequency compressor
25 Ar
Temperature sensor fault of
variable frequency external
fan drive electric box
6 Ld
Phase-loss protection of
variable frequency compressor
26 AL
Low voltage
protection/voltage drop fault
of variable frequency
external fan drive DC
busbar
7 LF
Power protection of variable
frequency compressor
27 AJ
Out-of-step protection of
variable frequency external
fan
8 PA
Drive AC current protection
(input side) of variable
frequency compressor
28 AH
Over-voltage protection of
variable frequency external
fan drive DC busbar
9 Pc
Drive current detection circuit
fault of variable frequency
compressor
29 AP
Abnormal drive AC input
voltage protection of
variable frequency external
fan
10 PF
Temperature sensor fault of
variable frequency compressor
drive electric box
30 AU
Drive charging circuit fault of
variable frequency external
fan
11 PH
Over-voltage protection of
variable frequency compressor
drive DC busbar
31 A0
Drive module reset of
variable frequency external
fan