Sanyo SHP-TH90GDN-SW Technical Manual page 29

Trouble display table
<Heat pump unit>
Display
Trouble in coil temperature sensor
H01
of heat pump unit
Trouble in compressor temperature
H02
sensor
Trouble in outdoor temperature
H03
sensor
H04 Trouble in current sensor
H05 Trouble in high pressure switch
H06 Trouble in water coil inlet sensor
H07 Trouble in water coil outlet sensor
H09 Trouble in split coil inlet sensor
H0A Trouble in split coil outlet sensor
H11 Trip input (PAM overcurrent, PAM
overvoltage)
Trouble
Open-circuit or short-circuit in sensor itself or lead wires
<Diagnosis>
• Defective contact of connector or defective crimping of
• Defective heat pump unit PCB
When a current of 0.8A or more does not flow at an
operating frequency of 43 Hz.
High pressure switch confirmed after 8 retries.
(When refrigerant pressure is 16 MPa or more)
<Diagnosis>
• Blocked refrigerant circuit pipe
• Defective high pressure switch or heat pump unit PCB
• Trouble in hot water storage circulation system (such
• Defective hot water storage circulation pump
• When there is no water in the tank unit
• Improper installation of unit
Open-circuit or short-circuit in sensor itself or lead wires
<Diagnosis>
• Defective contact of connector or defective crimping of
• Defective heat pump unit PCB
PAM overcurrent, PAM overvoltage or FET overheating
confirmed after 8 retries
<Diagnosis>
• Abnormal voltage and current protection in PAM circuit
• Blocked refrigerant circuit pipe
• Instantaneous power failure caused by lightning
• 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
• When there is no water in the tank unit
• Improper installation of unit
Criteria and diagnosis
terminal
as trapped air or blockage)
terminal
as trapped air or blockage)
unit