Search found 4 matches

by mjcp
Sat Oct 13, 2012 8:37 pm
Forum: Coleman Service & Repair
Topic: 7970-656/d No blower, valve closes.
Replies: 1
Views: 2321

7970-656/d No blower, valve closes.

Sequence observed.

Good Pilot, call for heat, valve opens, good flame*, no blower, valve closes.
Fan switched to ON Blower works.

My first thought is a limit switch, can they be Jumpered to see which one?
Any other thoughts appreciated.
by mjcp
Tue Dec 22, 2009 5:09 pm
Forum: Coleman Service & Repair
Topic: DGAA070BDTB Pressure switch failure.
Replies: 3
Views: 2105

Re: DGAA070BDTB Pressure switch failure.

I do have voltage to one side (the rear leg), and the other leg only has voltage when the switch actuates. The problem seems to be intermittent low pressure to the switch - which could be the motor or blockage?? , we don't seem to have blockage so I'm trying to troubleshoot the motor, but I don't se...
by mjcp
Sun Dec 20, 2009 7:48 pm
Forum: Mobile Home Repair
Topic: Changing water heater from elec. to gas
Replies: 14
Views: 4976

Re: Changing water heater from elec. to gas

A gas water heater in a mobile home, requires a major effort and expense. To avoid carbon monoxide poisoning you MUST have a Unit designed and approved for Mobile home use. This will most likely be the most expensive unit your dealer offers. Where we live an electric water heater, or a gas water hea...
by mjcp
Sun Dec 20, 2009 7:16 pm
Forum: Coleman Service & Repair
Topic: DGAA070BDTB Pressure switch failure.
Replies: 3
Views: 2105

DGAA070BDTB Pressure switch failure.

This furnace is flashing 3 times indicating a pressure switch failure. the problem is intermittant yet most of the time. eg: three cycles in a row furnace runs fine, then 4th cycle fails, and 8 attempts after fail. Furnace is about 4 years old. VOM shows 28v +/- on the switch when it works, <1 volt ...