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RHEEM THERMAL AIR SOURCE HEAT PUMP INSTALLATION, MAINTENANCE & SERVICE MANUAL
5.1 Thermostat Model
5.1.1 Machine Will Not Start
As a safety feature, the Heat Pump has a programmed time delay between provision
of power and unit start, usually a few minutes. Wait for this time delay before making
the following checks:
Check electrical supply to the unit is ON.
•
Check water flow
•
Check electrical for loose connections and wiring.
•
Check supply fuse.
•
Check thermostat is correctly set.
•
5.1.2 Storage Tank Will Not Heat
Check that the ejected air temperature is colder than incoming air. If so, this means
•
the unit is extracting heat from the air and transferring this to water.
Check that the evaporator and internal pipes sweating. This is evidence of heat
•
removal from the air, suggesting that the heater is working.
Check inlet louvres, outlet grill and condenser coil has satisfactory airflow and is not
•
clogged.
Check that thermostat is correctly set
•
Check that water pump is running
•
Check that inlet valves are not closed
•
Check ambient air temperature suits design standards
•
The temperature rise for a heat pump heating may seem slow but the unit is probably
working. Typically, heat pumps have a much lower KW per hour heat output capacity
than gas and will need to operate for more time to deliver the same heat transfer.
RHEEM HOT WATER SYSTEM (ASEAN REGION)
SECTION 5: TROUBLESHOOTING
12 |
P a g e
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