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DCS DRH-48 Natural Gas Built in Heater Won't Light

The heater is brand new but sat for 2 years and was just installed last weekend. When you turn it on the pilot glows red hot and cycles on and off, but the heater will not light. It seems like the its not getting gas, but it is. Any help would be greatly appreciated.

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I have worked on two units and have had several problems with them. On a new install like you described, it may be that you have to purge the air out of the gas line. Do you smell natural gas at the unit? If not, then you can open the front control panel cover and unscrew the purge valve on the gas valve. This is assuming that you do hear the gas/air flowing when the unit is turned on.

If the units lights, then goes out, then there is a problem with the heater sensor portion. check to make sure the white wires are all connected inside.

If things still don't work, then the problem may be beyond this short answer.
Good Luck

Posted on Nov 05, 2009

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Posted on Jan 02, 2017

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