Sanyo SHP-TH90GDN-SW Technical Manual page 30

Display
H12 Trip input (HIC current or
temperature)
H13 Abnormal compressor temperature
Current peak cutoff
Value of the cutoff
H14
SHP-C90GDN: 12A
SHP-C90GEN: 25A
Trouble in EEPROM (heat pump
H15
unit PCB)
H16 DC compressor operation trouble
H17 DC fan motor operation trouble
H23 Water heating (for the tank unit)
trouble
Incorrect piping connection
H27
between units
Trouble
HIC trouble confirmed after 8 retries
<Diagnosis>
• HIC protection activated by abnormal current or
• Blocked refrigerant circuit pipe
• Instantaneous power failure caused by lightning
• Defective HIC or outdoor fan motor shutdown
• Defective high pressure switch or heat pump unit PCB
• Trouble in hot water storage circulation system (such
• Defective hot water storage circulation pump
• Defective electric expansion valve in heat pump unit
• When there is no water in the tank unit
• Improper installation of unit
When the compressor temperature is too high and this is
confirmed after 8 retries
<Diagnosis>
• Defective electric expansion valve in heat pump
• Blocked refrigerant circuit pipe or escaping refrigerant
When the current is too high and this is confirmed after
8 retries
<Diagnosis>
• When an operating current of 12A or more has flowed
Outdoor unit OTP trouble confirmed after 8 retries
<Diagnosis>
• Defective EEP-ROM data or EEP-ROM installation
Trouble in DC compressor speed confirmed after 8 retries
<Diagnosis>
• Open-phase operation, defective compressor
• Blocked refrigerant circuit pipe or defective heat pump
Trouble in DC fan motor speed confirmed after 8 retries
<Diagnosis>
• Defective DC fan motor or defective connector contact
• Defective heat pump unit PCB
When the failure of the outlet water temperature from the
heat pump unit to reach the rating is sustained for 10
minutes after the compressor temperature reached its
target
<Diagnosis>
• Trouble in circulation system (problem with escaping
• Defective circulation pump
• No water supplied to tank unit
• Refrigerant escaping from heat pump unit
• Defective PCB in tank unit or heat pump unit
• Defective electric expansion valve in heat pump unit
• Defective compressor
the outlet water temperature continuously for 3 minutes
in the test run mode
Criteria and diagnosis
temperature
as trapped air or blockage)
unit
unit PCB
air)