Bigtwin
New Member
Posts:7
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| 14 Jun 2009 10:04 AM |
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Our Waterfurance 2's high pressure light came on Saturday (when the dealer is closed of course) and the cooling stopped. When this light comes on, what does this indicate is wrong? Would it be ok to reset by flipping the breaker on/off?
Doesn't seem like the unit is cooling that well.
thanks
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geo fan
Basic Member
Posts:408
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| 14 Jun 2009 10:23 AM |
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most equipment has a manual high limit reset
which means to reset it you have to push a specific button on the equipment turning the power on and off wont do it
but it wont hurt either . High pressure trips in cooling would usualy be an issue with the wet side of the system . Make sure your circulators pumps are running ,there could be air in the lines .
There is also the slight chance of a metering device problem , non condensables in the refrigerent . Or if your open loop another list of options exsist |
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Bergy
Basic Member
Posts:277
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| 14 Jun 2009 10:36 AM |
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Bigtwin,
In the cooling mode a "High Pressure" fault is normally caused by the following...
1) Inoperative blower
2) Dirty filters
3) Dirty air coil
4) Restricted supply or return ducts
For you, the homeowner, the MOST important thing is filter maintenance.
If you want a Geothermal system to last 25 years keep your filters clean!!
About 30% of my service calls are because of dirty filters.
Bergy
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geo fan
Basic Member
Posts:408
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| 14 Jun 2009 11:54 AM |
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all due respect bergy but high pressure happens when the system cant dump enough heat
"high pressure = high temp "
Low pressure happens when the system cant absorb enough heat
"Low pressure = low temp "
If the air flow where to be restricted they system could not absorb enough heat , while the compressor continued to dump heat to the loops the pressure would go down and down , and the system would freeze up . |
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Bigtwin
New Member
Posts:7
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| 14 Jun 2009 03:28 PM |
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thanks for the information. I'll pick up a new filter and install tomorrow and report back the results.
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Bergy
Basic Member
Posts:277
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| 14 Jun 2009 05:24 PM |
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Geofan, You are correct...For some reason I was thinking about the heating mode. My head is back where it belongs.  Bergy PS to Bigtwin, Heating or cooling... the filters are still the one thing you can do to help insure the health of your system. |
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joe.ami
Veteran Member
Posts:4377
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| 14 Jun 2009 08:25 PM |
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High pressure in cooling = poor heat discharge through the condenser. In this case water side. So you have inadequate water flow or over charge or......is there anything else the light could stand for?
joe |
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Joe Hardin
www.amicontracting.com
We Dig Comfort!
www.doityourselfgeothermal.com
Dig Your Own Comfort! |
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Bigtwin
New Member
Posts:7
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| 15 Jun 2009 07:11 PM |
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I replaced the filter and it didn't help. Service came out and said we were low on freon. He said it doesn't/didn't take much to bring it back to spec...seems to be cooling well thie evening with 90F and 55% humidity. |
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Bergy
Basic Member
Posts:277
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| 15 Jun 2009 07:26 PM |
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Bigtwin,
What model number is your unit? Did the service company find the leak?
Are they going to find the leak?
Bergy
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geo fan
Basic Member
Posts:408
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| 15 Jun 2009 08:27 PM |
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high pressure light = Leak ? something doesnt seem right |
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Bigtwin
New Member
Posts:7
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| 15 Jun 2009 09:27 PM |
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we'll be visiting with them again tomorrow...3 hrs after the freon was added, the high pressure light came on again and the unit shut down :(
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guywan2
New Member
Posts:4
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| 16 Jun 2009 05:00 AM |
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Just my two cents. If you have a high pressure lockout in cooling it is something to do with waterflow or the loop side. It cannot be a filter or low refrigerant pressure as a matter of fact adding refrigerant will make the problem worse. The tech always needs to start with water side diagnostics. Any tech who puts guages on before performing water side diagnostics first WOULDN'T be working for me very long. Could alsso be a bad refrigerant control (three way or TXV ) but that is rare. |
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joe.ami
Veteran Member
Posts:4377
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| 16 Jun 2009 07:22 AM |
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Does the high pressure light stand for anything else? i.e. is it a "pressure" light (vs high pressure light) or does it also indicate low coil temp?........anything else?
There is a reason I ask (twice now).
joe |
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Joe Hardin
www.amicontracting.com
We Dig Comfort!
www.doityourselfgeothermal.com
Dig Your Own Comfort! |
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Bigtwin
New Member
Posts:7
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| 16 Jun 2009 10:07 AM |
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Service guy checked it out and found a bad capacitor that is related to the waterflow...I'll post back the results of the part replacement..guywan2, your 2 cents seems to be right on track.
The part that failed: Cambridge capacitor 4micro farad, made in UK 3998...the capacitor has a gray type matter extruding near the bottom and poking out the side of the capacitor, about 1/2 inch square.
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Bergy
Basic Member
Posts:277
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| 16 Jun 2009 03:36 PM |
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Bigtwin, Let's try this again to see if my head really is out of ...you know where and back where it belongs. High pressure=no leak. No leak means no refrigerant should have been added to the unit. So, once the service tech has properly addressed the issue they MUST check the superheat and subcooling of the unit. They will need to recover the excess refrigerant as they dial in the system's performance. Guywan2 is correct in his statement that a tech should not put guages on a heat pump until the water side analysis shows a problem. Bergy |
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joe.ami
Veteran Member
Posts:4377
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| 16 Jun 2009 10:27 PM |
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Posted By Bigtwin on 06/16/2009 10:07 AM
Service guy checked it out and found a bad capacitor that is related to the waterflow...I'll post back the results of the part replacement..guywan2, your 2 cents seems to be right on track.
The part that failed: Cambridge capacitor 4micro farad, made in UK 3998...the capacitor has a gray type matter extruding near the bottom and poking out the side of the capacitor, about 1/2 inch square.
Was this a capacitor on the flow center? |
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Joe Hardin
www.amicontracting.com
We Dig Comfort!
www.doityourselfgeothermal.com
Dig Your Own Comfort! |
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engineer
Veteran Member
Posts:2749
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| 17 Jun 2009 08:39 PM |
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4 uF sounds like a reasonable size for a cap on a small motor such as a flow center pump. |
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Curt Kinder <br><br>
The truth is incontrovertible. Malice may attack it, ignorance may deride it, but in the end, there it is - Winston Churchill <br><br><a href="http://www.greenersolutionsair.com">www.greenersolutionsair.com</a>
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joe.ami
Veteran Member
Posts:4377
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| 18 Jun 2009 07:43 AM |
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Posted By joe.ami on 06/16/2009 7:22 AM
Does the high pressure light stand for anything else? i.e. is it a "pressure" light (vs high pressure light) or does it also indicate low coil temp?........anything else?
There is a reason I ask (twice now).
joe Third try.... If the HP indicator does not indicate anything else, then I like inadequate water flow for the culprit. J |
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Joe Hardin
www.amicontracting.com
We Dig Comfort!
www.doityourselfgeothermal.com
Dig Your Own Comfort! |
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Bigtwin
New Member
Posts:7
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| 19 Jun 2009 10:08 PM |
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Posted By joe.ami on 06/18/2009 7:43 AM Posted By joe.ami on 06/16/2009 7:22 AM
Does the high pressure light stand for anything else? i.e. is it a "pressure" light (vs high pressure light) or does it also indicate low coil temp?........anything else?
There is a reason I ask (twice now).
joe Third try.... If the HP indicator does not indicate anything else, then I like inadequate water flow for the culprit. J Joe.ami, I assume the cap was on the water flow source side....I'm the homeowner and can't answer your question...I'm not sure your question was to me but just wanted to clarify. Our cooling is working very well since the cap was replaced.
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joe.ami
Veteran Member
Posts:4377
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| 20 Jun 2009 07:39 AM |
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Glad to hear it.
J |
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Joe Hardin
www.amicontracting.com
We Dig Comfort!
www.doityourselfgeothermal.com
Dig Your Own Comfort! |
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