Panasonic S-71WF3E - Error Codes Table

232
23.2 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
 Total indoor capability more than
maximum limit or less than minimum
limit, or number of indoor unit less than
two.
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)
H28 Abnormal solar sensor Continue for 5 sec.
 Solar temperature sensor (defective or
disconnected)
H31 Abnormal swimming pool sensor Continue for 5 sec.
 Pool temperature sensor (defective or
disconnected)
H36 Abnormal buffer tank sensor Continue for 5 sec.
 Buffer tank sensor (defective or
disconnected)
H38 Brand code not match
When indoor and outdoor
brand code not same
—
H41 Indoor or Standby Unit Error
3 times occurrence within
40 minutes
 Other indoor standby unit error, wrong
wiring & connecting pipe, or expansion
valve leakage
H42 Compressor low pressure abnormality —
 Outdoor pipe temperature sensor
 Clogged expansion valve or strainer
 Insufficient refrigerant
 Outdoor PCB

Compresso
r
H43 Abnormal Zone 1 sensor Continue for 5 sec.
 Water temperature Zone 1 sensor
H44 Abnormal Zone 2 sensor Continue for 5 sec.
 Water temperature Zone 2 sensor
H51
Outdoor gas pipe temperature sensor
abnormality
Continue for 5 sec.
 Outdoor gas pipe sensor (defective or
disconnected)
H53
Outdoor liquid pipe temperature sensor
abnormality
Continue for 5 sec.
 Outdoor liquid pipe sensor (defective
or disconnected)
H62 Water flow switch abnormality Continue for 160 sec.
 Water flow switch
*H63 Refrigerant low pressure abnormality Continue for 5 sec.
 Outdoor low pressure sensor
(defective or disconnected)
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)
H67 Abnormal External Thermistor 1 Continue for 5 sec.
 Room temperature Zone 1 sensor
H68 Abnormal External Thermistor 2 Continue for 5 sec.
 Room temperature Zone 2 sensor
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
H74 PCB communication error
Communication or transfer
erro
r
 Indoor main PCB and Sub PCB
H75 Low water temperature control
Room heater disable and deice
request to operate under low
wate
r
temperature
 Heater operation must enable to
increase water temperature
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

Indoo
r
/Outdoor PCB
H91 Tank heater OLP abnormality Continue for 60 sec.
 Tank heater OLP
(Disconnection or activated)