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49-50300-2 19
Troubleshooting
TROUBLESHOOTING
Before you call for service....
Save time and money! Review the chart below first and you may not need to call for service.
CAUTION
For your safety, DO NOT attempt repair of electrical wiring, controls, heating elements or
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Problem Possible Causes
What To do
OPERATION AND PERFORMANCE
Not enough or no hot
water
Water temperature may
be set too low
• See the Water Temperature Adjustment and Water Heater
Capacity sections. (Pages 4 & 5)
Hot water usage pattern
exceeds the capability of
the water heater in current
mode
• Change to different mode.
• Wait for the water heater to recover after an abnormal
demand.
Cold water inlet tempera-
ture may be colder during
the winter months
• This is normal. The colder inlet water takes longer to heat.
• Consider increasing the set temperature as described in
the Water Temperature Adjustment section.
Leaking or open hot wa-
ter faucets
• Make sure all faucets are closed.
Long runs of exposed
pipe, or hot water piping
on outside wall
• Insulate piping.
Not enough clearance to
allow air to circulate for
the heat pump
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Room is too small or too
cool, slowing heating
performance
• Smaller rooms can lead to cooler room temperatures due
to the heat pump cooling the air. If the room is smaller than
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tion.
• Cooler room temperatures can cause the water heater to
take longer to fully recover to the set temperature. Consider
increasing the set temperature as described in the Water
Temperature Adjustment section.
A fuse is blown, circuit
breaker tripped, or elec-
tric service to your home
may be interrupted
• Replace fuse or reset circuit breaker.
• Contact the local electric utility.
Inadequate wiring • See the Installation Instructions.
Manual reset limit (TCO) • See the Safety Controls section, see page 4.
Water Connections to
unit reversed
• Correct piping connections.
Recirculating System
Interference (if installed)
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• Insulate piping
Water is too hot Water temperature is set
too high
• See the Water Temperature Adjustment section.
Electric control has failed • Call for service.
Water heater is mak-
ing the room cooler
Room is not vented
properly or is too small
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change with surrounding rooms.
Heat is removed from the
air to heat the water
• This is normal.
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