Takagi T?K4?IN - TROUBLESHOOTING; TEMPERATURE AND AMOUNT OF HOT WATER

Troubleshooting
37│Page
GENERAL
TROUBLESHOOTING

‐TEMPERATUREandAMOUNTOFHOTWATER‐
PROBLEM SOLUTIONS
Ittakeslongtimetoget
hotwateratthe
fixtures.

• Thetimeittakestodeliverhotwaterfromthewaterheaterto
yourfixturesdependsonthelengthofpipingbetweenthetwo.
Thelongerthedistanceorthebiggerthepipes,thelongeritwill
take
togethotwater.
• Ifyouwouldliketoreceivehotwatertoyourfixturesquicker,you
maywanttoconsiderahotwaterrecirc ulationsystem.(p.28)
Thewaterisnothot
enough.


• Comparetheflowandtemperature.Seethechartsonp.48‐49.
• Checkcrossplumbingbetweencoldwaterlinesandhotwater
lines.
• Isthegassupplyvalvefullyopen?(p.30)
• Isthegaslinesizedproperly?(p.18)
• Isthegassupplypressure
enough?(p.19)
• Isthesettemperaturesettoolow?(p.33‐34)
Thewateristoohot.
• Isthesettemperaturesettoohigh?(p.33‐34)
Thehotwaterisnot
availablewhenafixture
isopened.


• Makesuretheunithas120VAC/60Hzpowersupply.
• Ifyouareusingtheremotecontroller,isthepowerbuttonturned
on?
• Isthegassupplyvalvefullyopen?(p.30)
• Isthewatersupplyvalvefullyopen?(p.30)
• Isthe
filteroncoldwaterinletclean? (p.36)
• Isthehotwaterfixturesufficientlyopentodrawatleast0.75GPM
throughthewaterheater?(p.33)
• Istheunitfrozen?(p.35)
• Isthereenoughgasinthetank/cylinder?(ForPropanemodels)
Thehotwaterturns
coldandstayscold.

• Istheflowrateenoughtokeepthewaterheaterrunning?(p.33)
• Ifthereisarecirculationsysteminstalled,doestherecirculation
linehaveenoughcheckvalves?(p.28)
• Isthegassupplyvalvefullyopen?(p.30)
• Isthefilteroncoldwaterinletclean?
(p.36)
• Arethefixturescleanofdebrisandobstructions?
• Checkiftheflowrateistoolow.(p.33‐34)
Fluctuationinhotwater
temperature.

• Isthefilteroncoldwaterinletclean?(p.36)
• Isthegaslinesizedproperly?(p.18)
• Isthesupplygaspressuresufficient?(p.19)
•
Checkforcrossconnectionbetweencoldwaterlinesandhotwaterlines. 