SAVE A SERVICE CALL
34
HEAT PUMP IS NOT OPERATING
•
Power must be available at the water heater and the water heater switched on.
If there is power to the water heater, check the heat pump has been turned
“On” at the Display Panel.
“Turn the Water Heater On or Off”
on page 18.
•
Time controlled power supply
If the water heater is connected to a time controlled power supply, then during periods of no power supply
at the water heater, the heat pump and electric heating unit will not operate.
This is not a fault condition, but a result of no power being available to operate the water heater.
Check the hours of supply from the electricity retailer.
The Display Panel will illuminate again when power is available again at the water heater.
Note:
If power was cut to the heat pump whilst it was operating, it may wait for up to three (3) minutes
before recommencing to operate when power is restored and if heating is required.
•
Heat pump operating range
The heat pump’s operating range is when the ambient air temperature is from -5°C to 43°C.
If the ambient air temperature is between -5°C and 7°C and heating is required, the heat pump will operate
for up to 3 hours 20 minutes. If heating of the water is not complete in this time, heating will switch from
the heat pump to the electric heating unit.
The water temperature in the upper part of the water heater at the end of a heating cycle will be 60°C.
•
Possible fault condition
If the heat pump has developed a fault, the heat pump will not operate, and a fault code will be displayed
on the Display Panel in the Main Display Area. Try turning on the Manual Electric Heating Mode. In this
mode, the electric heating unit will operate if heating of the water is required. The boost capacity by the
electric heating unit is 195 litres. Refer to
on page 27 and
“Manual Electric Heating Mode”
on page 28.
Take note of the fault code and phone your nearest Solahart Dealer to arrange for an inspection.
TEMPERATURE PRESSURE RELIEF VALVE OR EXPANSION CONTROL VALVE RUNNING
•
Normal Operation
It is normal and desirable the temperature pressure relief valve or expansion
control valve (if fitted) allows a quantity of water to escape during the heating
cycle. This quantity should be equal to approximately 1/50 of the hot water
used, as water expands by this volume when heated. However, if it discharges
more than a bucket full of water in 24 hours, there may be another problem.
The expansion control valve (if fitted) will discharge water instead of the
temperature pressure relief valve as it has a lower pressure rating. A benefit is
that energy is conserved as the discharged water is cooler. This valve is
installed in the cold water line to the water heater (refer to the
on page 42).
•
Continuous dribble
Try gently raising the easing lever on the relief valve for a few seconds (refer
to
on page 8). This may dislodge a small particle of foreign
matter and clear the fault. Release the lever gently.
•
Steady flows for long periods (often at night)
This may indicate the mains water pressure sometimes rises above the designed pressure of the water
heater. Ask your installing plumber to fit a pressure limiting valve.
Warning:
Never replace the relief valve with one of a higher pressure rating.
•
Heavy flows of hot water from the temperature pressure relief valve until the water heater is cold -
then stops until water reheats
The water heater
must
be switched off at the isolating switch or switchboard. Phone your nearest Solahart
Dealer to arrange for an inspection.
