DIY Home Improvement, Remodeling & Repair Forum > Appliances > HVAC > 1 year old Goodman GMH81155CN Gas Furnace problem




Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old 10-18-2010, 01:02 PM  
bcarter
Junior Member
 
Join Date: Oct 2010
Location: falls church, va
Posts: 2
Default 1 year old Goodman GMH81155CN Gas Furnace problem

I have a
Goodman GMH81155CN Gas Furnace

115,000 BTU Furnace, 80% Efficiency, 2-Stage Burner, 2,000 CFM Multi-Speed Blower, Upflow/Horizontal Flow Application

as of last night these have been the symptoms:

1 click
2 click
3 click - RED LED at the bottom motor circuit board comes on
4 click - RED LED is still on
5 click - sounds like a double click and exhaust motor comes on the RED LED is still on, but after 2 - 3 seconds the exhaust motor cuts off, RED LED turns off, and the cycle repeats after about 2-3 seconds.

The HSI doesn't glow at all.

I switched off the heating functionality at the thermostat control, then went back to the unit to pull these fault codes:

3 - pressure switch stuck open
4 - open high limit

I used this site to check the high limit switch
IHateMyFurnace.Com we'll help you get along with your furnace.

according to this if i get continuity its functioning. I got continuity.


Any Help would be great!
Thank you



__________________
bcarter is offline  
 
Reply With Quote Quick reply to this message
Old 10-18-2010, 03:08 PM  
kok328
Supporting Member
HRT_SUPPORTER.png
 
Join Date: Nov 2007
Location: Grand Blanc, MI
Posts: 2,139
Liked 92 Times on 81 Posts
Likes Given: 60

Default

So then that leaves the problem of the pressure switch being stuck open.
Test the pressure switch manually and see if this is the cause of the problem.

__________________
kok328 is offline  
 
Reply With Quote Quick reply to this message
Old 10-18-2010, 06:45 PM  
paul52446m
Senior Member
 
Join Date: Oct 2010
Location: Houghton Lake, Mi.
Posts: 435
Liked 1 Times on 1 Posts

Default

Quote:
Originally Posted by bcarter View Post
I have a
Goodman GMH81155CN Gas Furnace

115,000 BTU Furnace, 80% Efficiency, 2-Stage Burner, 2,000 CFM Multi-Speed Blower, Upflow/Horizontal Flow Application

as of last night these have been the symptoms:

1 click
2 click
3 click - RED LED at the bottom motor circuit board comes on
4 click - RED LED is still on
5 click - sounds like a double click and exhaust motor comes on the RED LED is still on, but after 2 - 3 seconds the exhaust motor cuts off, RED LED turns off, and the cycle repeats after about 2-3 seconds.

The HSI doesn't glow at all.

I switched off the heating functionality at the thermostat control, then went back to the unit to pull these fault codes:

3 - pressure switch stuck open
4 - open high limit

I used this site to check the high limit switch
IHateMyFurnace.Com we'll help you get along with your furnace.

according to this if i get continuity its functioning. I got continuity .


Any Help would be great!
Thank you
When you take a continuity test you have to take the wires off the control you are testing because you could get a false reading.
The same think holds true with the pressure switch, take the wires off if you want to check with continuity. You can take the hose off the other end
and leave it on the pressure switch, the pressure switch should not have continuity, then blow on the hose and see is you get continuity. Make sure you do not have a plugged stack. Make sure you do not have any water in the hose going to the pressure switch. Make sure you do not have any
cracks in the hose going to the pressure switch, it only takes a small crack to stop the pressure switch.
I don,t understand the clicking as you are saying. Check the sequence of operation in your book. The first click should be the inducer fan, then the pressure switch makes, then after 15 to 30 seconds the glow bar starts
to heat, and after that the main gas comes on.
Now the inducer fan can't start unless the limit and all roll out switches are made. let me know how you make out. later Paul
__________________
paul52446m 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
1 year old Goodman GMH81155CN Gas Furnace problem bcarter HVAC 0 10-18-2010 12:39 PM
Goodman split system heat pump problem AU_Prospector HVAC 8 10-08-2010 04:56 PM
furnace problem letony General Home Improvement Discussion 1 10-24-2009 11:22 AM
help on a gas furnace ignition problem zorroo HVAC 4 11-19-2008 08:36 PM
Gas Furnace problem mekanic Introductions 3 04-14-2006 06:08 PM