Installation Manual

Troubleshooting
41│Page
GENERAL
TROUBLESHOOTING

PROBLEM SOLUTIONS
‐TEMPERATUREandAMOUNTOFHOTWATER‐
Ittakeslongtimetoget
hotwateratthe
fixtures.

• ThetimeittakestodeliverhotwaterfromtheT‐H2‐DV/T‐H2‐OS
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.32)
Thewaterisnothot
enough.


• Comparetheflowandtemperature.Seethechartonp.50.
• Checkcrossplumbingbetweencoldwaterlinesandhotwater
lines.
• Isthegassupplyvalvefullyopen?(p.34)
• Isthegaslinesizedproperly?(p.18)
• Isthegassupplypressureenough?
(p.17)
• Isthesettemperaturesettoolow?(p.37,38)
Thewateristoohot.
• Isthesettemperaturesettoohigh?(p.37,38)
Thehotwaterisnot
availablewhenafixture
isopened.


• Makesuretheunitgets120V60Hzpowersupply.
• Ifyouareusingtheremotecontroller,isthepowerbuttonturned
on?
• Isthegassupplyvalvefullyopen?(p.34)
• Isthewatersupplyvalvefullyopen?(p.34)
• Isthefilteroncold
waterinletclean?(p.40)
• Isthehotwaterfixturesufficientlyopentodrawatleast0.5GPM
throughthewaterheater?(p.37)
• Istheunitfrozen?
• Isthereenoughgasinthetank?(forLP)
Thehotwaterturns
coldandstayscold.

• IstheflowrateenoughtokeeptheT‐H2‐DV/T‐H2‐OSrunning?(p.
37)
• Ifthereisarecirculationsysteminstalled,doestherecirculation
linehaveenoughcheckvalves?
• Isthegassupplyvalvefullyopen?(p.34)
• Isthefilteroncoldwaterinlet
clean?(p.40)
• Arethefixturescleanofdebrisandobstructions?
Fluctuationinhotwater
temperature.

• Isthefilteroncoldwaterinletclean?(p.40)
• Isthegaslinesizedproperly?(p.18)
• Isthesupplygaspressureenough?(p.17)
•
Checkforcrossconnectionbetweencoldwaterlinesandhotwaterlines. 