Trouble Shooting Guide
If you are faced with a problem in using our Hot Water Heat Pump system, please check the
following items, before seeking professional help.
Status
Considerable Causes
Action to Take
Small or no hot water is left in
the storage tank.
- Stop using hot water and wait for about 1
hour
- Consider a change of the electricity
supply off-peak mode (Length of power-
supply hours may be too short for the
water heating cycle to cover the hot water
consumption)
No hot water
comes out of
water tap
Temperature
of hot water is
too low
Air removing procedure from the
heat pump system may be
insufficient.
- Open the water drain plugs on the Heat
Pump Unit to remove air from water circuit.
(Be careful for burning)
Filter on cold inlet connector may
be blocked.
- Check the filter and remove if there is any
blockage
Water flow speed may be
dropped due to the heat pump
piping bend, blockage or crush.
- Check for any piping bend or crush and
remove if any
Pipes may be frozen.
- If frozen area is found on the piping, melt
the ice on the pipe and provide heat
insulation
Stop valve is closed.
- Open the valve
Air absorption is not sufficient
due to a blockage on the
evaporator.
-Remove the object blocking the air flow
through the evaporator
(e.g. fallen leaves, grass, snow, etc.)
For those problems not listed in the list above, an inspection provided by a skilled
technician
is required. Please contact your
EcoPlus authorized installer or the
Rheem
service department.
Caution:
Do not turn off the electricity supplied to the heat pump system even if you go away from
home and do not use hot water for a long while. If the system is equipped with freeze
protect heaters, also do not turn off the power supply to the heaters.
Failure to do so may cause the pipes to crack, due to freezing.
Sanden Heat Pump – Owner’s Manual
Page 9 of 20
