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RHEEM THERMAL AIR SOURCE HEAT PUMP INSTALLATION, MAINTENANCE & SERVICE MANUAL
3.3 De-Icing
All units include hot gas bypass de-ice. This will occur when to evaporator temperature
reaches -4°C, after a period of 30 minutes unit will go into de-ice mode and will terminate
when the coil temperature reaches 10°C of when 10 minutes have passed.
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a)
In locations where ambient temperature are very low, if unit is not used for a long period,
it is essential to drain all water from unit to prevent ice build-up in water pipe-work.
b)
Leak test refrigerant system once every 6 months.
c)
Check pressure switches, de-ice control and solenoid valves.
d)
Check thermostat or Rheem IQ
e)
Check fan motor support and fan blades.
f)
Check condensate drain for blockages.
g)
Check water inlet and outlet connections for any leaks.
h)
Check current draw with and without load.
i)
Check operating voltage at compressor terminal with load, without load and at start-up.
j)
A minimum program of servicing every four months is recommended and should be
undertaken by a specialist refrigeration mechanic.
k)
The unit casing is designed for outdoor installation and no specific maintenance should
be necessary. If the case is cleaned, ensure that power to the unit is switched off.
l)
Clean evaporator coils. If coils are becoming clogged with leaves or debris, remove
any surrounding source of leaf or other litter.
RHEEM HOT WATER SYSTEM (ASEAN REGION)
SECTION 4: MAINTENANCE
controller.
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