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Thread: Hitecsa txv?
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06-09-2016, 07:10 PM #1
Hitecsa txv?
Hi this is my first post and have been working on a system I am not familiar with at all. The system is running ok in heating but when switching over to cooling it then suddenly goes into vac and cuts out within seconds. 4 way valve has been changed and the only thing that I can see which looks like it could be a TXV is this picture attached any help or advice much appreciated
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06-09-2016, 07:58 PM #2
Re: Hitecsa txv?
This is not a TXV. Its a pressure control.
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06-09-2016, 08:24 PM #3
Re: Hitecsa txv?
Thank you, I thought as much just wanted to make sure as could not find a TXV anywhere on the system so had to second guess. Any ideas why it is going into vac once in cooling? Cheers
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06-09-2016, 08:29 PM #4
Re: Hitecsa txv?
Cooling expansion valve is most likely blocked, track your liquid line to the evaporator, maybe it is a piston type which will look like a flare nut?
Mostly found in the southern part of this green and pleasant land.
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06-09-2016, 08:36 PM #5
Re: Hitecsa txv?
Is the new 4 way valve operating correctly?
Brian - Newton Abbot, Devon, UK
Retired March 2015
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06-09-2016, 08:40 PM #6
Re: Hitecsa txv?
Yeah the new 4 way valve is working efficiently this was my first port of call and installed the new one today still no luck
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06-09-2016, 11:17 PM #7
Re: Hitecsa txv?
Get a service manual from the manufacturers so that you can identify the circuit parts.
Brian - Newton Abbot, Devon, UK
Retired March 2015
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07-09-2016, 09:14 AM #8
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07-09-2016, 08:38 PM #9
Re: Hitecsa txv?
Try CDL in Warrington or Hushon. We have bought Hitecsa from both in the past. They may be able to help. I have a couple of manuals in pdf. Ping me your email and i'll send them to you.
Can't see much having changed over 10 years as they are quite prehistoric.
Cheers
EggsLast edited by eggs; 07-09-2016 at 08:42 PM.
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06-09-2016, 11:17 PM #10
Re: Hitecsa txv?
was the system doing the same thing before replacing the 4 way valve?
Mostly found in the southern part of this green and pleasant land.
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07-09-2016, 09:04 AM #11