DOWNLOAD Panasonic WH-SDC07F3E5 / WH-SDC09F3E5 / WH-UD07FE5 / WH-UD09FE5 Service Manual ↓ Size: 7.68 MB | Pages: 127 in PDF or view online for FREE

Model
WH-SDC07F3E5 WH-SDC09F3E5 WH-UD07FE5 WH-UD09FE5
Pages
127
Size
7.68 MB
Type
PDF
Document
Service Manual
Brand
Device
Air Conditioner / AIR-TO-WATER HEATPUMP
File
wh-sdc07f3e5-wh-sdc09f3e5-wh-ud07fe5-wh-ud09fe5.pdf
Date
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Panasonic WH-SDC07F3E5 / WH-SDC09F3E5 / WH-UD07FE5 / WH-UD09FE5 Service Manual ▷ View online

93 
16.4  Error Codes Table 
 
Diagnosis display 
Abnormality/Protection control 
Abnormality judgement 
Primary location to verify 
H00 
No abnormality detected 
— 
— 
H12 
Indoor/Outdoor capacity unmatched 
90s after power supply 
  Indoor/outdoor connection wire 
  Indoor/outdoor PCB 
  Specification and combination table in 
catalogue 
H15 
Outdoor compressor temperature sensor 
abnormality 
Continue for 5 sec. 
  Compressor temperature sensor 
(defective or disconnected) 
H20 
Water pump abnormality 
Continue for 10 sec. 
  Indoor PCB 
  Water pump (malfunction) 
H23 
Indoor refrigerant liquid temperature 
sensor abnormality 
Continue for 5 sec. 
  Refrigerant liquid temperature sensor 
(defective or disconnected) 
H27 
Service valve error 
Continue for 5 minutes 
  High pressure sensor (defective or 
disconnected) 
H42 
Compressor low pressure abnormality 
— 
  Outdoor pipe temperature sensor 
  Clogged expansion valve or strainer 
  Insufficient refrigerant 
  Outdoor PCB 
  Compressor 
H62 
Water flow switch abnormality 
Continue for 1 min. 
  Water flow switch 
H64 
Refrigerant high pressure abnormality 
Continue for 5 sec. 
  Outdoor high pressure sensor  
(defective or disconnected) 
H65 
Deice circulation error 
Continue for 10 sec. 
  Water flow switch sensor (defective or 
disconnected) 
  Water pump malfunction 
  Buffer tank (is used) 
H70 
Back-up heater OLP abnormality 
Continue for 60 sec. 
  Back-up heater OLP 
(Disconnection or activated) 
H72 
Tank sensor abnormal 
Continue for 5 sec. 
  Tank sensor 
H76 
Indoor - control panel communication 
abnormality 
— 
  Indoor - control panel  
(defective or disconnected) 
H90 
Indoor/outdoor abnormal communication
> 1 min after starting operation
  Internal/external cable connections 
  Indoor/Outdoor PCB 
H91 
Tank heater OLP abnormality 
Continue for 60 sec. 
  Tank heater OLP  
(Disconnection or activated) 
H95 
Indoor/Outdoor wrong connection 
— 
  Indoor/Outdoor supply voltage 
H98 
Outdoor high pressure overload 
protection 
— 
  Outdoor high pressure sensor 
  Water pump or water leakage 
  Clogged expansion valve or strainer 
  Excess refrigerant 
  Outdoor PCB 
H99 
Indoor heat exchanger freeze prevention
— 
  Indoor heat exchanger 
  Refrigerant shortage 
F12 
Pressure switch activate 
4 times occurrence within 20 
minutes 
  Pressure switch 
F14 
Outdoor compressor abnormal revolution
4 times occurrence within 20 
minutes 
  Outdoor compressor 
F15 
Outdoor fan motor lock abnormality 
2 times occurrence within 30 
minutes 
  Outdoor PCB 
  Outdoor fan motor 
F16 
Total running current protection 
3 times occurrence within 20 
minutes 
  Excess refrigerant 
  Outdoor PCB 
F20 
Outdoor compressor overheating 
protection 
4 times occurrence within 30 
minutes 
  Compressor tank temperature sensor 
  Clogged expansion valve or strainer 
  Insufficient refrigerant 
  Outdoor PCB 
  Compressor 
F22 
IPM (power transistor) overheating 
protection 
3 times occurrence within 30 
minutes 
  Improper heat exchange 
  IPM (Power transistor) 
F23 
Outdoor Direct Current (DC) peak 
detection 
7 times occurrence 
continuously 
  Outdoor PCB 
  Compressor 
F24 
Refrigeration cycle abnormality 
2 times occurrence within 20 
minutes 
  Insufficient refrigerant 
  Outdoor PCB 
  Compressor low compression 
F25 
Cooling/Heating cycle changeover 
abnormality 
4 times occurrence within 30 
minutes 
  4-way valve 
  V-coil 
F27 
Pressure switch abnormality 
Continue for 1 min. 
  Pressure switch 
F30 
Water outlet sensor 2 abnormality 
Continue for 5 sec. 
  Water outlet sensor 2 (defective or 
disconnected) 
 
94 
Diagnosis display 
Abnormality/Protection control 
Abnormality judgement 
Primary location to verify 
F36 
Outdoor air temperature sensor 
abnormality 
Continue for 5 sec. 
  Outdoor air temperature sensor 
(defective or disconnected) 
F37 
Indoor water inlet temperature sensor 
abnormality 
Continue for 5 sec. 
  Water inlet temperature sensor 
(defective or disconnected) 
F40 
Outdoor discharge pipe temperature 
sensor abnormality 
Continue for 5 sec. 
  Outdoor discharge pipe temperature 
sensor (defective or disconnected) 
F41 
PFC control 
4 times occurrence within 10 
minutes 
  Voltage at PFC 
F42 
Outdoor heat exchanger temperature 
sensor abnormality 
Continue for 5 sec. 
  Outdoor heat exchanger temperature 
sensor (defective or disconnected) 
F43 
Outdoor defrost sensor abnormality 
Continue for 5 sec. 
  Outdoor defrost sensor (defective or 
disconnected) 
F45 
Indoor water outlet temperature sensor 
abnormality 
Continue for 5 sec. 
  Water outlet temperature sensor 
(defective or disconnected) 
F46 
Outdoor Current Transformer open 
circuit 
— 
  Insufficient refrigerant 
  Outdoor PCB 
  Compressor low 
F48 
Outdoor EVA outlet temperature sensor 
abnormality 
Continue for 5 sec. 
  Outdoor EVA outlet temperature sensor 
(defective or disconnected) 
F49 
Outdoor bypass outlet temperature 
sensor abnormality 
Continue for 5 sec. 
  Outdoor bypass outlet temperature 
sensor (defective or disconnected) 
F95 
Cooling high pressure overload 
protection 
— 
  Outdoor high pressure sensor 
  Water pump or water leakage 
  Clogged expansion valve or strainer 
  Excess refrigerant 
  Outdoor PCB 
 
95 
16.5 Self-diagnosis 
Method 
16.5.1  Connection Capability Rank Abnormality (H12) 
Malfunction Decision Conditions: 
During startup operation of cooling and heating, the capability rank of indoor checked by the outdoor is used to 
determine connection capability rank abnormality. 
 
Malfunction Caused: 
1  Wrong model interconnected. 
2  Wrong indoor unit or outdoor unit PCB (main) used. 
3  Faulty indoor unit or outdoor unit PCB (main). 
 
Abnormality Judgment: 
Continue for 90 seconds. 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
96 
16.5.2  Compressor Tank Temperature Sensor Abnormality (H15) 
Malfunction Decision Conditions: 
During startup and operation of cooling and heating, the temperatures detected by the compressor tank 
temperature sensor are used to determine sensor error. 
 
Malfunction Caused: 
1  Faulty connector connection. 
2  Faulty sensor. 
3  Faulty outdoor unit PCB (main). 
 
Abnormality Judgment: 
Continue for 5 seconds. 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
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