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BillyHvac, Journeyman HVAC Tech
Category: HVAC
Satisfied Customers: 22508
Experience:  Endorsed for unlimited heating, cooling, oil burners, boilers, refrigeration, hydronics
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I have A 35000 BTU gravity wall heater. Model no.w355f-d. It

Resolved Question:

<p>I have A 35000 BTU gravity wall heater. Model no.w355f-d. It is about 2 years old. Several months ago it stoped working. I jumped theThermostat and it worked. I replaced the thermostat. It has worked since but with a delay in ignition. It has stoped working. What is causing the problem?</p><p>Next is to replace the therma cupple or piolet generator whech ever this unit has, is this correct?</p>
Submitted: 6 years ago.
Category: HVAC
Expert:  BillyHvac replied 6 years ago.

You are on the right track...and the unit does have a pilot generator.


You may me lacking enough millivolts to activate valve.


Here is manual -


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