31
Before$You$Call$For$Service…
Troubleshooting'Tips'
Save'time'and'money!'Review'the'charts'on'the'following'pages'first' and'you'may'not'need'to'call'for'service.
CAUTION:$For$your$safety,$DO$NOT$attempt$repair$of$electrical$wiring,$gas$piping,$remote$control,$burners,$
vent$connectors$or$other$safety$devices.$Refer$repairs$to$qualified$service$personnel.
CAUTION:$Label$all$wires$prior$to$disconnection$when$servicing$controls.$Wiring$errors$can$cause$improper$
and$dangerous$operation.$VERIFY$PROPER$OPERATION$AFTER$SERVICING.
Problem Possible'Cause What'To'Do
Not'enough'or'no'hot'water. Water'Shutoff'valve'is'not'fully'opened. ● Check'shutoff'valve'and'open'fully.
Hot'water'faucet'is'not'fully'opened. ● Open'hot'water'faucet'completely.'
(The'main'burner'goes'off'
when'incoming'water'volume'is'
inadequate.)
Water'piping'is'frozen. ● Allow'piping'to'thaw.
No'electricity'or'water'supply'is'cut'off.' ● Check'that'proper'power'is'being'
supplied'and/or'water'supply'is'
adequate.
Unit'is'not'“ON”. ● Turn'the'unit'“ON”'by'the'button'on'
the'remote'control.
The'temperature'may'be'set'too'low. ● Increase'the'temperature'setting.
Mixing'Valve'Malfunctions''
(if'applicable)
● Check'and'replace'if'necessary.
Error'code'displayed'on'remote'control. ● See'instructions'for'Error'Code'and'if'
required,'contact'a'dealer'for'service.
Not'enough'water'demand. ● Increase'water'flow.
Water'inlet'filter'clogged. ● Clean'water'inlet'filter.
Fixture'aerator'is'clogged. ● Clean'aerator.
Scale'buildup'in'heat'exchanger. ● Check'for'error'code.'If'required,'
contact'a'dealer'for'service.
Hot'and'cold'water'lines'reversed. ● Reverse'water'connections.
Water'not'hot'enough. The'temperature'may'be'set'too'low. ● Increase'the'temperature'setting.
The'gas'valve'is'not'fully'opened. ● Check'and'open'the'gas'valve'fully.
Gas'supply'pressure'is'low. ● Call'your'gas'company'to'verify'the'
gas'meter'and'gas'piping'size.
Bleed'over'in'one'of'the'hot'water'
fixtures.
● Call'dealer'for'service.
Water'too'hot. Temperature'is'set'too'high. ● Decrease'the'temperature'setting.
Water'shutoff'valve'is'not'fully'opened. ● Check'shutoff'valve'and'open'fully.
Small'amount'of'water'has'been'heated. ● Allow'more'water'to'flow.
Fan'continues'to'rotate'after'hot'water'
faucet'is'closed.
This'function'is'to'supply'hot'water'
when'the'hot'water'faucet'is'reopened.
● Normal'operation.'There'is'no'need'
to'call'for'service.
CAUTION:$Make$certain$power$to$water$heater$is$“OFF”$before$removing$protective$cover$FOR$ANY$REASON.
AP15317 (10_09) DV Gas Manual 10 30 09.indd 31 11/9/2009 3:10:33 PM