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PKGP-SVX03D-EN
Troubleshooting and Diagnostics
Troubleshooting checklist
"EE" code is displayed as controller and control panel communication fails.
A total of 13 fault input alarm switches, as well as 1 failure output alarm switch, are provided for
single compressor system
S/N Input port Fault Description Type Code
Central
Controller
Code
Troubleshooting
1 TH1
Return water temperature sensing
line in short/open circuit
A SE 84 All peripherals are to be closed.
2 TH2
Outlet water temperature sensing
line in short/open circuit
A SL 85 All peripherals are to be closed.
3 TH3
Discharge temperature 1 in short/
open circuit
A Sd 82 All peripherals are to be closed.
4 TH4
Defrost temperature sensing line
1 in short/open circuit
A S1 7F All peripherals are to be closed.
5 OVHT/HP2 Electric heating overload B H2 65 The electric heater is to be closed.
6 FLOW Inadequate water ow D FL 6D All peripherals are to be closed.
7 OV-PUMP Water pump overloaded B OP 6A All peripherals are to be closed.
8 OV-FAN
Compressor 1 middlum-pressure
alarming
B 78 78 All peripherals are to be closed.
9 OV-COMP1 Compressor 1 overloaded C C1 68 Only compressor 1 is to be shut down.
10 HP1
Compressor 1 high voltage
pressure alarming
C H1 64 Only compressor 1 is to be shut down.
11 LP1
Compressor 1 low voltage
pressure alarming
C L1 66 Only compressor 1 is to be shut down.
12 / / /
Refrigerating outlet water
temperature is too low.
D E3 8D
The compressor is to be shut down, while
the auxiliary heater of water pump is to work.
13 TH3 Discharge temperature is too high. D 94 94
The compressor is to be shut down, while
the auxiliary heater of water pump is to work.
14 TH4 Coil temperature is too high. C 98 98 All peripherals are to be closed.
15 TH2
BPHE outlet water temperature is
too high.
C 90 90 All peripherals are to be closed.
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