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good point on the brazing...I can only assume they are doing it correctly...but then again. I will pass on about the service bulletin info. Can you provide bulletin??

Indeed they are danfoss valves. I wonder if they are aware of this issue?

These would be in Frigidaire heat pumps

I was in the local supplier today and I was asked if I had ever seen failures such as ruptured power heads and sensing bulbs that have blown off. He has a collection of returned txv's. I am not a...

the jury rigged fan on a combo wood oil heater

refrigerant suction line on a heat pump

yep on a rinnai on demand 199,00 btu be utilized as backup supply for radiant infloor...not my install but is now my problem

What did you find ...anymore head way? I am a york dealer as well. I feel your pain. I had a problem with these comm stats as well, however my system when set in auto.. heat 70 cool 74. whenever...

What did you find ...anymore head way? I am a york dealer as well. I feel your pain. I had a problem with these comm stats as well, however my system when set in auto.. heat 70 cool 74. whenever...

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thanks ... one could say "I had my lunch handed to me on this one".

As suggested by DogBoy in his last thread on this topic I am providing an update and what i feel is the solution this problem.
First.... I am most certain at one point I was dealing with two issues....

not yet. i am going back on saturday to try something out. i will post the good the bad and the uuug

Thanks for the number. Wrt defrost I did forced defrost testing to check that possibility and each time it was no issue.. No need too apologize I appreciate any and all comments.

I have tested the defrost numerous times to try and prove. Will be checking in with the customer this morning to see if the problem is still occurring after the lock out temperature was changed to 25

I am not so sure there is a tech support network for york. At least not in canada, as I have never been given a number to call and when I did a number to call the response was to fill out a form and...

Well the saga continues.... since the control boards were changed. The erratic heat on has resurfaced. this time no fault code as was previously indicated. No call for heat at stats, zone panel...

my test fuse has been in for ten days and there has been no issues after changing the indoor and outdoor control boards. So the fused "o" to ground was removed last night and connected to defrost...

I finally got on site when the problem was occurring. I had fault code on the defrost control board indicating that "w" and "o" are present in heat mode. This error gives a soft lockout. 4 soft...

well that did not work....changed the board out yesterday morning after going thru the steps suggested. customer called last night at 945 same problem. had to sit in a dark room to calm down after...

after a long chat with honeywell tech support the plan is the next time it happens, is the customer is going to remove W1/E on equipment terminal strip. If the problem stops its in the zone panel. If...

This system was installed May of this year. Cooling performed great ...no issues

Since the heating season has come and on 3 different days... one zone (same each time) runs wild and overheats
...

Personnaly returned today to have a look as too what I will now refer to as a " dogs breakfast".
no non condensibles
Its not a Microchannel channel add on coil... its a C6B.
Found the cool speed...

Perfect, thanks for the insight

Good to know, thanks