I have a 1987 Intertherm FEH-015HA electric furnace. The issue I am having is that my blower will not shut of unless I pull the disconnect. My thermostat will operate the heating elements like normal, the blower just never shuts of whether the switch is set to "auto" or "On" There is no AC on my unit
You most likely have a bad fan limit / cycling switch. If you kill the power to the furnace see if you can trace the wires from the motor to where the connect to the switch. It looks like a round button with tabs sticking out of it for the wires to connect. Mark down where the wires were connected and take it to a HVAC business or furnace supply house. Be sure to have the model off the furnace with you so you can get the correct parts.
Testimonial: "Thank you. So this switch is different then the main switch that controls on and auto? from the motor the wires go into a 12 plug connector, from there it looks like they connect to sequencers or something?"
Stuck relay
Pull the tstat off and see if blower shuts off.
Check relay
SOURCE: Intertherm E1EH-015HA FURNACE no heat
Sounds like a downflow electric furnace? If so it sounds like you have 15kw worth of electric heat, you might have a defective heating sequencer, witch is what they call a dual on one plate.
SOURCE: I NEED A FILTER FOR MY 1991 HOBILE HOME FURNACE
Best things to do is find your Return grill in the home.
Get a measuring tape and measure the Hole size with the grill removed, Or filterback grill whatever the case.
Then simply go to a home retailer with the size, or in rare cases you may want to consider a Hogs hair washable filter that can be cut to size, to fit it perfectly.
I’m happy to help further over the phone at https://www.6ya.com/expert/michael_341f3f9dee622e54
SOURCE: I have an intertherm electric furnace FEH-A020,
The model of T-stat you gave comes up as a discontinued model on Honeywell's web site, but it looks to be a manual stat that type of stat would have to be wired with a summer winter switch with electric heat, allowing it to turn on the fan with a call for heat. If yours is a programmable T-stat you would need to select electric heat or in the installers set up change the default setting for fan from unit controls fan in heat to thermostat controls fan.
SOURCE: Intertherm model# FEH-015HA It is no longer blowing heat
High limit safety device is probably tripped, it should reset automatically, also check other safety's for tripped condition, they look like small round device located in a variety locations through out the unit with two wires to each one, some have small push button resets located in the burner compartment area. If all the safety's are reset and check out OK the main control board may need replaced. One of the most common causes of high limit safety device trip is lack of air flow, Dirty filters, evaporator coils, malfunctioning blowers, closed supply air registers etc.
Note: High limit safety switches also go bad after being tripped to many times.
If it's only a two wire system, it should be on the R/RC and W. Fan should kick on automatically.
Not too familar with that unit
A is usally for a heat pump pick-up coil or heating element
Pay attention once you've rewired the t'stat. Make sure the blower goes on automatically. The most it should take is apx five min, even if house is really cold
Also, check the heater. It may have way more options for control. You will just have to run new t'stat wire to take advantage
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