
Air Source Heat Pump Water Heater
45
Please contact the SINCLAIR appointed service center in case of any of
following conditions.
Malfunction phenomenon
Malfunction analysis
The water heater stops operation and
the wired controller displays PF
Malfunction of temperature sensor of
drive electric box of inverter
compressor
The water heater stops operation and
the wired controller displays P9
Zero-crossing protection of drive AC
input of inverter compressor
The water heater stops operation and
the wired controller displays AL
Low voltage protection of drive DC bus
bar of inverter outdoor unit or voltage
dropping malfunction
The water heater stops operation and
the wired controller displays AH
High voltage protection of drive DC bus
bar of inverter outdoor unit
The water heater stops operation and
the wired controller displays AA
AC current protection of inverter
outdoor fan (input side)
The water heater stops operation and
the wired controller displays A1
Drive IPM module protection of inverter
outdoor fan
The water heater stops operation and
the wired controller displays AF
Drive PFC protection of inverter outdoor
fan
The water heater stops operation and
the wired controller displays AC
Failure startup of inverter outdoor fan
The water heater stops operation and
the wired controller displays Ad
Phase-lacking protection of inverter
outdoor fan
The water heater stops operation and
the wired controller displays A0
Drive module reset of inverter outdoor
fan
The water heater stops operation and
the wired controller displays A0
Overcurrent protection of inverter
outdoor fan
The water heater stops operation and
the wired controller displays UP
Power protection of inverter fan
The water heater stops operation and
the wired controller displays AE
Detection circuit malfunction of driven
current of inverter outdoor fan
The water heater stops operation and
the wired controller displays AJ
Desynchronizing protection of inverter
outdoor fan
The water heater stops operation and
the wired controller displays A6
Driven communication malfunction
between main control and inverter
outdoor fan
The water heater stops operation and
the wired controller displays A8
High temperature protection of driven
module of inverter outdoor fan
The water heater stops operation and
the wired controller displays A9
Malfunction of temperature sensor of
driven module of inverter outdoor fan
The water heater stops operation and
Malfunction of drive storage chip of