Heat Pump question
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I think I can... I think...
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From: Texas (DFW area)
Thread Starter
I think I can... I think...
Joined: Aug 2004
Posts: 2,264
Likes: 0
From: Texas (DFW area)
In that case, a grounding wire was not required in 1971. If one was added later, you may be feeding power through an improper installation. Reguardless of the ground wire, no energy should be getting past a properly installed disconnect.
Thread Starter
I think I can... I think...
Joined: Aug 2004
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From: Texas (DFW area)
No power is getting passed the disconnect. The only power going to and from the disconnect is from the one breaker that feeds the outside unit, wich is where the disconnect is located. The only wires (at least from what I can tell) that go between the inside and outside units is control wires from the thermostat.
No power is getting passed the disconnect. The only power going to and from the disconnect is from the one breaker that feeds the outside unit, wich is where the disconnect is located. The only wires (at least from what I can tell) that go between the inside and outside units is control wires from the thermostat.
Thread Starter
I think I can... I think...
Joined: Aug 2004
Posts: 2,264
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From: Texas (DFW area)
Thread Starter
I think I can... I think...
Joined: Aug 2004
Posts: 2,264
Likes: 0
From: Texas (DFW area)
If he does I'll toss him out on his head and call someone else.
Thread Starter
I think I can... I think...
Joined: Aug 2004
Posts: 2,264
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From: Texas (DFW area)
Well I called out "DS".
I explained all of the issues that I'd found, Heat strips staying on, reversing valve not working, previous technician draining off refrigerant.
He checked the heat strips first......could not duplicate the issue.
Hmmmm????? Beats me!!!
Went to the reversing valve next even though I watched my buddy check for current at the reversing valve (24v) he found that there was no current to the reversing valve when the system was set to cool. Really strange!!!
He jumpered from another control wire and we could clearly hear the reversing valve switch.
He quickly switched out thermostats but no dice. There were a couple of unused control wires so he swapped wires and the darn thing fired right up.
He put the gauges on it and sure enough it was low on refrigerant.
Funny, he asked the guys name who drained it off and when I told him he grinned for a second and then smoothly went to a completely non emotional face. My guess is he doesn't have a lot of respect for the previous guy.
Anyway it's cooling quite well right now and this last guy was wide open in explaining and showing me what he was doing. The other two guys kinda talked in circles and wasn't real specific when answering my questions.
I explained all of the issues that I'd found, Heat strips staying on, reversing valve not working, previous technician draining off refrigerant.
He checked the heat strips first......could not duplicate the issue.
Hmmmm????? Beats me!!!
Went to the reversing valve next even though I watched my buddy check for current at the reversing valve (24v) he found that there was no current to the reversing valve when the system was set to cool. Really strange!!!
He jumpered from another control wire and we could clearly hear the reversing valve switch.
He quickly switched out thermostats but no dice. There were a couple of unused control wires so he swapped wires and the darn thing fired right up.
He put the gauges on it and sure enough it was low on refrigerant.
Funny, he asked the guys name who drained it off and when I told him he grinned for a second and then smoothly went to a completely non emotional face. My guess is he doesn't have a lot of respect for the previous guy.
Anyway it's cooling quite well right now and this last guy was wide open in explaining and showing me what he was doing. The other two guys kinda talked in circles and wasn't real specific when answering my questions.
Ron, put an amprobe around one leg of the high voltage wires.(240). If it is drawing amps. (22, 44) with the t stat off then something is wrong. Maybe a low voltage short (red to white), stuck sequencer, stuck contactor, or even the t stat itself. The high amp. draw will be the sure fire way to tell if the strips are on. Heat pumps in heat mode won't put out 120 air. Do you hear the swoosh of the reversing valve on a call for cool? Is the reversing valve (SOV) getting 24 volts? The contractor should not have sold you a mis-matched outdoor unit. Rich
Thread Starter
I think I can... I think...
Joined: Aug 2004
Posts: 2,264
Likes: 0
From: Texas (DFW area)
Confusing!!!!



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