Takagi T-H3S-DV User Manual

50 Page
TROUBLESHOOTING
GENERAL
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 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recirculationsystem.(p.38)
The water is not hot
enough.
• Comparetheflowandtemperature.Seethechartsonp.62.
• Check cross plumbing between cold water lines and hot water lines.
• Is the gas supply valve fully open? (p. 40)
• Isthegaslinesizedproperly?(p.26)
• Is the gas supply pressure sufficient? (p. 27)
• Isthesettemperaturesettoolow?(p.44and45)
The water is too hot. • Isthesettemperaturesettoohigh?(p.44and45)
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 and/or temperature controller, is
the power button turned on?
• Is the gas supply valve fully open? (p. 40)
• Is the water supply valve fully open? (p. 40)
• Isthefilteroncoldwaterinletclean?(p.49)
• Isthehotwaterfixturesufficientlyopentodrawatleast0.5GPM
(1.9L/min)throughthewaterheater?(p.44)
• Istheunitfrozen?(p.48)
• 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. 44)
• If there is a recirculation system installed, does the recirculation line have
enoughcheckvalves?(p.38)
• Is the gas supply valve fully open? (p. 40)
• Isthefilteroncoldwaterinletclean?(p.49)
• Are the fixtures clean of debris and obstructions?
• Check if the flow rate is too low. (p. 44)
Fluctuation in hot
water temperature.
• Isthefilteroncoldwaterinletclean?(p.49)
• Isthegaslinesizedproperly?(p.26)
• Is the supply gas pressure sufficient? (p. 27)
• Check for cross connection between cold water lines and hot water lines.
Troubleshoong
Owner's Guide

Takagi T-H3S-DV Specifications

General

Brand	Takagi
Model	T-H3S-DV
Category	Water Heater
Language	English