Save A Service Call - Rheem HPHD-135HNU-483 Owner's Manual And Installation Instructions

Commercial Air to Water Heat Pump Water Heater

SAVE A SERVICE CALL

Check the items below before making a service call. You
will be charged for attending to any condition or fault that
is not related to manufacture or failure of a part.
NOT ENOUGH HOT WATER (OR
NO HOT WATER)
• Is the electricity switched on?
Inspect the circuit breaker marked "HOT WATER" or
"WATER HEATER" at the electrical service panel and
the isolating switch at the water heater and ensure
they are turned on.
Check the circuit breaker marked "HOT WATER" or
"WATER HEATER" at the electrical service panel.
• Is the alarm light flashing RED on heat
pump controller?
If the alarm light is flashing RED, check the alarm by
pressing the alarm button. Contact your nearest Ser-
vice Department to inform about the alarm.
• Is the timer set?
If the timer has been set, ensure sufficient time has
been allowed to reheat the storage tanks.
• Are you using more hot water than you
think?
Are outlets (especially the showers) using more hot
water than you think? Very often it is not realised the
amount of hot water used, particularly when shower-
ing. Carefully review the hot water usage. Have your
plumber install a flow control valve to each shower
outlet to reduce water usage.
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• Heat pump circulator has failed?
The heat pump will not operate if the heat pump cir-
culator has failed. Refer to "Heat Pump Is Not Operat-
ing" section . Phone your nearest Service Department
or Accredited Service Agent to arrange for an inspec-
tion.
• Water heater size
Do you have the correct size water heater for your
requirements? Contact Rheem Application Engineer-
ing for guidance.
• Air temperature is cold – defrost mode
If this method of low ambient temperature operation is
used, the heat pump will enter a defrost mode when
ice is sensed on the evaporator coil. The recovery rate
of the heat pump is reduced in this mode due to the
lower operating air temperature and heating of water
is reduced during the defrost cycle.
WATER TOO HOT
The water heater, during both normal heat pump opera-
tion and auxiliary booster operation (activated during pe-
riods of ambient temperatures below 41°F (5°C) or heat
pump fault), will heat the water to a temperature of 140°F
(60°C) to 149°F (65°C). It is recommended to set the aux-
iliary booster thermostat setting to 140°F (60°C).
WATER NOT HOT ENOUGH
You may find that due to heavy hot water usage the water
temperature may be lower than normally expected, due to
insufficient heating time being allowed. Additional storage
or an in series booster may be required to be installed
under these circumstances.