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Troubleshooting - Andrews FASTflo WH42 Owner's Manual

Continuous flow wall hung balanced flue water heaters for natural gas and lpg.
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26

TROUBLESHOOTING

Troubleshooting-1
Hot water is not available when
the hot water fixture is opened.
Hot water is not available at low
temperatures.
Hot water is not available at
high temperatures.
Cold water comes out when the
fixture is barely opened. Only
cold water is available at low
flow rates.
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 heater frozen?
• Is the gas meter working?
• (For LP) Is there enough gas in the tank?
• Is the operation button turned on?
• 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, check
remote controller?
• If the supply water is at a high temperature, you may
need to increase the flow rate through the heater to get
a low temperature out of it.
• Are the gas and water supply valves fully open?
• Is the water temperature setting appropriate, check
remote controller?
• The heater stops burning when the flow of hot water
becomes less than 2.5 LPM. Open the hot water fixture
more, and the water temperature will stabilize.

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