18
14 FOLLOWING SYMPTOMS ARE NOT
HEAT PUMP TROUBLES
Symptom 1: The system does not operate
Symptom 2: Change into the Pump mode
during heating mode
Symptom 4: Noise of heat pump
The heat pump does not start immediately after the ON/OFF
button on the romote controller is pressed.
If the operation lamp lights, the system is in normal condition.To
prevent overloading of the compressor motor, the heat pump
starts a few minutes after it is turned ON.
When the system is changed over to heating operation after
defrost operation Moisture generated by defrost becomes
steam and is exhausted.
A continuous low hissing sound is heard when the system is in
operation.
This is the sound of refrigerant gas flowing through both indoor
and outdoor units.
A hissing sound which is heard at the start or immediately after
stopping operation or defrost operation.
This is the noise of refrigerant caused by flow stop or flow
change.
When the tone of operating noise changes.
This noise is caused by the change of frequency.
Symptom 5: Dust comes out of the unit
Symptom 6: The units can give off odours
When the unit is used for the first time in a long time.
This is because dust has gotten into the unit.
The unit can absorb the smell of rooms, furniture, cigarettes,
etc., and then emit it again.
Symptom 7: The outdoor unit fan does not
spin.
During operation. The speed of the fan is controlled in order to
optimize product operation.
The operation lamp is flashing rapidly (twice every second)
This lamp is still flashing rapidly after turn off the power and turn
on again.
Remote controller receives malfunction or the button does not
work well.
A safety device such as a fuse, a breaker frequently actuates.
Obstacles and water enter the unit.
Water leaks from indoor unit.
Other malfunctions.
15 TROUBLE SHOOTING
If one of the following malfunctions occur, stop operation, shut
off the power, and contact with your dealer.
If the system does not properly operate except the above
mentioned cases or the above mentioned malfunctions is
evident, investigate the system according to the following
procedures.
When the outlet water temperature drops to the set
temperature, the compressor goes off and the indoor unit
changes to pump mode; when the temperature rises up, the
compressor starts again. It is same in the heating mode.
.
Symptom 3: White mist comes out of outdoor
unit
Summary of Contents for SHERPA S2 E 12
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