Gorenje HPWW12, Instructions For Installation And Start-Up

Page: 60 / 64

Water-to-water Heat Pump
60
14. Malfunctions
MALFUNCTION POSSIBLE CAUSE WHAT TO DO?
Heat pump fails to operate No supply voltage Provide power supply
Operating unit reports
error:
3 phase current
asymmetrical
Incorrect sequence of
phases on the three-phase
power input Change the phase
sequence on the three-
phase power input
Operating unit fails to
operate in spite of power
supply to controller Loose connection between
the operating unit and
supply cable cord or
between the controller and
the supply cable cord -
Circuit breaker 1F1
triggered
Repair the loose
connection
Replace the circuit
breaker
Heat pump failure, error
reported on operating unit Malfunction in operation of
individual component parts
of the heating s ystem; error
identified on display Eliminate the cause of
malfunction, reset the
operation with operating
unit
No heating operation Incorrect setting
Select required mode of
operation, follow the
Instructions
No hot sanitar y water Incorrect setting Select required mode of
operation for heating the
sanitar y water
Heat pump reports error:
High Pressure No heat absorption Bleed the heating s ystem
Check the operation of
circulation pumps
Check the capacity of the
heat exchangers
Reset the heat pump with
the Reset knob on the
operating unit
Heat pump reports error:
Low Pressure Leakage of refrigerant from
the s ystem Detect the leakage point,
restore vacuum and refill
the s ystem
Heat pump reports error:
Max. pressure No heat absorption Bleed the heating s ystem
Check the operation of the
circulation pumps
Check the capacity of the
heat exchangers
Sanitar y water not heated
to required temperature Insufficient capacity of heat
exchanger on sanitar y
water tank
Temperature set too high
Increase capacity of the
heat exchanger (replace
sanitar y water tank)
Reduce required
temperature of sanitar y
water