DIY Home Improvement, Remodeling & Repair Forum > Appliances > HVAC > Electric Heater - Sequencer and Thermostat Problems




Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old 05-12-2010, 09:45 AM  
birlbond
Junior Member
 
Join Date: May 2010
Posts: 1
Default Electric Heater - Sequencer and Thermostat Problems

All,

I have had ongoing problems with my electric heater/AC unit for the past 6 months or so.

One of the problems is that the heater will stay on even when the thermostat is set to Cool. The heater sequencer has been replaced twice now and both of the ones that were replaced appeared to be broken: the top part looked like it had been burnt and one of the wires connected to it had some of the insulation melted off. Once replaced the heater would turn off and seems to operate properly.

The second problem is that the fan wouldn't come on in "Auto" mode on the thermostat. The thermostat has been replaced twice now, and again, the problem seems to be solved by this each time.

Today the thermostat and sequencer were replaced again, but I have a feeling they are just going to break again. Are these problems related? What is going on?

Any ideas are appreciated - thanks in advance!

Will



__________________
birlbond is offline  
 
Reply With Quote Quick reply to this message
Old 05-12-2010, 10:33 AM  
Wuzzat?
Senior Member
 
Wuzzat?'s Avatar
 
Join Date: Jan 2010
Posts: 2,206
Liked 146 Times on 133 Posts
Likes Given: 80

Default

Quote:
Originally Posted by birlbond View Post
One of the problems is that the heater will stay on even when the thermostat is set to Cool.
1
The heater sequencer has been replaced twice now and both of the ones that were replaced appeared to be broken: the top part looked like it had been burnt and one of the wires connected to it had some of the insulation melted off. Once replaced the heater would turn off and seems to operate properly.
2
The second problem is that the fan wouldn't come on in "Auto" mode on the thermostat. The thermostat has been replaced twice now, and again, the problem seems to be solved by this each time.
3
Today the thermostat and sequencer were replaced again, but I have a feeling they are just going to break again. Are these problems related? What is going on?
4
Any ideas are appreciated - thanks in advance!

Will
Post a schematic; it's pasted on the inside of one of the panels.

1 Since this problem is reproducible it should be easy to troubleshoot.

2 If it works for a while and then fails the root cause of the failure hasn't been found.

3 See #1

4 I think you're right, see #2.
__________________
Wuzzat? is offline  
 
Reply With Quote Quick reply to this message
Reply


Quick Reply
Message:
Options

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter DIY Home Repair Forum Replies Last Post
Electric Panel Heater brandonriffel Green Energy and Sustenance Living 4 03-10-2010 02:44 PM
Thermostat Problems schmuck281 HVAC 0 06-30-2009 02:02 AM
Electric Heat Pump & Programmable Thermostat John Greeb HVAC 2 01-09-2009 09:01 PM
some kind of electric fireplace thermostat? Philphine HVAC 2 12-09-2008 02:13 PM
Thermostat issue on baseboard heater papason HVAC 7 12-10-2007 10:00 AM