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Water Furnace HI Pressure Light on
Last Post 19 Nov 2014 08:33 AM by
G.O. Joe
. 5 Replies.
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TIM MEREDITH
New Member
Posts:2
17 Nov 2014 07:01 PM
I just cleaned the coils a week ago and now the HI Pressure LED is on. The coils needed cleaning bad. Got ant Ideals way it's on. HELP
G.O. Joe
Basic Member
Posts:110
18 Nov 2014 05:00 AM
From Troubleshooting guide in order of likelihood in Heating- 1. Inoperative blower 2. Dirty filters 3. Dirty air coil 4. Restricted supply or return duct 5. Unit may be overcharged 6. Blocked or seized TXV Also could be faulty HP Switch
joe.ami
Veteran Member
Posts:4377
18 Nov 2014 09:13 AM
"The coils needed cleaning bad."
Why? Are you sure you cleaned them thoroughly?
Joe Hardin
www.amicontracting.com
We Dig Comfort!
www.doityourselfgeothermal.com
Dig Your Own Comfort!
TIM MEREDITH
New Member
Posts:2
18 Nov 2014 05:37 PM
I know I cleaned them thoroughly by taking a good bright light and looking at the coils with the light on one side and me on the other.Any way after turning the unit off and letting it set for a few hours yesterday the light went out and has not come back on as of yet. I have learned over the years to do most of the maintenance on it myself as there is no one in this area that works on them. I use the pink acid on it Kleen Right I think that's the name. Anyway not my first time doing it. The unit has been in the house since 98. Thanks anyway for the help. Still not sure what tripped it. If it comes back on will have to look into it deeper.
Bergy
Basic Member
Posts:277
19 Nov 2014 07:48 AM
It's much easier, and less harmful to the coil, to keep a clean filter in the unit...
G.O. Joe
Basic Member
Posts:110
19 Nov 2014 08:33 AM
This is just a shot in the dark. Any chance the unit came on while you had the blower door off to clean coil? If so, it would have locked out on HiPressure with no airflow across the aircoil.
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