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Troubleshooting - Bosch YS2180RA Owner's Manual

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Troubleshooting

Unit does not attempt to ignite
when water is running.
Unit attempts to ignite but fails
Hot water is not available
when a fixture is opened.
No water is available when
a fixture is opened.
The hot water is not the correct
temperature.
Water takes time to become hot
when turning the hot water fixture.
The water is too hot.
The water is not hot enough.
Operating Instructions
Initial Operation
• Check for reversed plumbing or crossed pipes.
• Check the water drain valve filter. (
• Reset unit and try again. There may be air in the gas line.
• Have a professional check the gas supply pressure.
Temperature
• Are the gas and water supply valves fully open?
• Is the water supply cut off?
• Is the hot water fixture sufficiently open?
• Is the gas being cut off by the gas meter?
(Can other gas devices such as stoves be used?)
• (For LP) Is there enough gas in the tank?
(Can other gas devices such as stoves be used?)
• Is the water drain valve filter clogged? (
• Is the operation button turned on?
• Is the water supply cut off?
• Is the heater frozen?
• Is the hot water fixture sufficiently open?
• Have you allowed enough time for the cold water in the
pipes to drain out?
• Are the gas and water supply valves fully open?
• Is the water temperature setting appropriate?
• If the water supply temperature is high, it is possible
for the temperature to be higher than the temperature
set on the remote controller.
• If only a small amount of hot water is demanded, it is
possible for the temperature to be higher than the
temperature set on the remote controller.
• Are the gas and water supply valves fully open?
• Is the water temperature setting appropriate?
p.24)
p.24)
(
p.14 and p.15)
(
p.14 and p.15)
(Continued)
25

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