Rheem forced-air furnace
Mod# RGLC-06NC-ER or maybe RGLC-06NCBER (Hard to read tag, I wrote down as NCBER but only can find any reference as NC ER or NC-ER).
Manufacture date: 10/1988
I can't find any parts list or break downs for this and need the fan blower "Time Delay Relay".
This is a down draft model that uses the optional "Time Delay Relay" to start the blower fan before the Cam-Stat fan/limit control kicks the fan on and I believe it also has delay on off but not totally sure of that.
The "Time Delay Relay" is solid-state from the looks of it, only about a 1" square block burned up so can't read any numbers or markings from it. It has four terminals, two from the gas valve that sends 24 volts to the relay as soon as the gas valve is powered and two more that switch the blower fan on even if the Cam-Stat fan control hasn't reached the on temp yet, (by function of time instead of temp).
Without the "Time Delay Relay" in the circuit the blower motor comes on about 1 minute after burner has fired, (fan control is set at 130 degrees on and 100 degrees off temps). Without the time delay relay there is a problem when the flame cycles off/room t-stat satisfied the blower only runs about 45-50 seconds to get the Cam-Stat temp down to the 100 degree shut-off temp but then raises back up to the 130 degree turn-on temp again in another minute or so. It does this cycle about 3 times before the temp won't raise high enough to turn on the blower again before the next call for heat. I lowered the fan off temp down to 90 degrees and that helped some, only two cycles instead of the 3 or 4.
I need to know the time delays the original TDR calls for on this so that I can set the times on a universal ICM251 time delay relay unit if I can't find the original TDR that this unit calls for.
Any help with the part# for the OEM TDR or the time delays on make and break would be helpful,
Edited by Budget Appliance Repair, 18 February 2013 - 09:18 AM.