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airheatman
airheatman, HVAC Technician
Category: HVAC
Satisfied Customers: 8049
Experience:  Furnace, A/C and heat pump specialist.
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When I put my themostat on heat the unit turns on & off

Customer Question

when I put my themostat on heat the unit turns on & off rapidly
JA: Soon. I'm trying to find the right HVAC Technician for you right now. As soon as they are ready, I will let you know. Did you double-check the thermostat's settings? And what about the filters?
Customer: all good
JA: Do you plan on doing the work yourself?
Customer: according to difficulty
JA: Anything else we should know to help you best?
Customer: unit is one year old package AC seems to be OK
Submitted: 5 months ago.
Category: HVAC
Expert:  airheatman replied 5 months ago.

Are you saying burners are going on and off?

Customer: replied 5 months ago.
no burners package unit all electric model 4wcc4048a1
Expert:  airheatman replied 5 months ago.

OK so heat pump package?

Expert:  airheatman replied 5 months ago.

Model please?

Expert:  airheatman replied 5 months ago.

Got it

Expert:  airheatman replied 5 months ago.

This is a heat pump. If unit works fine in cool mode you have a failing (sticking) TXV metering device on the coil

What happens is in call for heat the metering device does not open to allow refrigerant through so unit is shutting down by pressure switches,

You have two.One for cool and one for heat.

Customer: replied 5 months ago.
What's next? can I fix myself?
Expert:  airheatman replied 5 months ago.

You will have to have refrigerant gauges, a recovery machine,welding rig and a vacuum pump to recover the refrigerant sweat old txv out, new one in, evacuate system and recharge

Expert:  airheatman replied 5 months ago.

Most all TXVs are made in Mexico or China these days and failure is way too common. How old is unit? May be able to get replaced under warranty

Customer: replied 5 months ago.
It's Sunday afternoon, I can't do anything right now, no parts available..
Expert:  airheatman replied 5 months ago.

How old is unit?

Customer: replied 5 months ago.
New 8/15
Expert:  airheatman replied 5 months ago.

THis should be covered from installer under warranty.

Customer: replied 5 months ago.
I'll have to pay for the service call only?
Expert:  airheatman replied 5 months ago.

TXV is only about 65 bucks if you had to pay for part but labor to replace may be a couple hundred.

Expert:  airheatman replied 5 months ago.

But yes, part should be covered

Expert:  airheatman replied 5 months ago.

If you have further questions, please let me know.

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