Clk320_Greg
19-08-2011, 12:14 PM
Dealing with a Norpe integral multi dec, about a 2.5M dec. The one with the two compressors underneath and well known for bending pipes and kinking cap tubes when you pull the condensing units in and out...
Anyway the fault:
Call to site as we had an error 6 (Liquid line too hot, at or above 55C). Had a look and cleaned the coils (nothing really comeing out - serviced only 2 months prior) fans all fine. This was on a hot day so reset and returned the next day when it had done the exact same fault. Guages on (low side only as no hp port fitted - yet) we had a suction of 52PSI or -8. So start gropeing the system and sure enough when its all up and running we were getting a red hot coil and liquid line, now the cap tube was fitted directly into the outlet of the drier so i started to look at the drier suspiciously... Check back throught records and found that the system has had a new comp fitted (by another firm) but the drier appeared to be as from new.
So next we changed the drier, and at the same time put a HP access port in. She then ran fine for about a week before again throwing the same arror 6 with a red hot coil!
Thinking that maybe the drier had blocked again we returned to change again (this time armed with a slightly larger drier incase there was a bit of crap we needed to get out) We also left it to vac for near on 24H(with a few visits to release vac with OFN and vac back down). When installing the drier this time we also blew OFN through all sections of the system to ensure ther were no blockages - it all seemed fine.
All back together and weve got the exact same problem!!!!
Were chargeing according to manufactures spec (with a larger drier we may be slightly under charged, but really only very slight) and we are getting LP as before
52PSI or -10 and a HP (taken after the drier before the captube) of 350PSI which gently rises to nearer 400 before shutting off.
As i say the fans are ok, nothing around the unit (boxing in, air flows) has changed but were still getting this HP problem??? Im starting to look at the compressor but can really see how a comp fault could cause this?
Any ideas? (other then replacement of the entire god dam unit)
Thanks,
Anyway the fault:
Call to site as we had an error 6 (Liquid line too hot, at or above 55C). Had a look and cleaned the coils (nothing really comeing out - serviced only 2 months prior) fans all fine. This was on a hot day so reset and returned the next day when it had done the exact same fault. Guages on (low side only as no hp port fitted - yet) we had a suction of 52PSI or -8. So start gropeing the system and sure enough when its all up and running we were getting a red hot coil and liquid line, now the cap tube was fitted directly into the outlet of the drier so i started to look at the drier suspiciously... Check back throught records and found that the system has had a new comp fitted (by another firm) but the drier appeared to be as from new.
So next we changed the drier, and at the same time put a HP access port in. She then ran fine for about a week before again throwing the same arror 6 with a red hot coil!
Thinking that maybe the drier had blocked again we returned to change again (this time armed with a slightly larger drier incase there was a bit of crap we needed to get out) We also left it to vac for near on 24H(with a few visits to release vac with OFN and vac back down). When installing the drier this time we also blew OFN through all sections of the system to ensure ther were no blockages - it all seemed fine.
All back together and weve got the exact same problem!!!!
Were chargeing according to manufactures spec (with a larger drier we may be slightly under charged, but really only very slight) and we are getting LP as before
52PSI or -10 and a HP (taken after the drier before the captube) of 350PSI which gently rises to nearer 400 before shutting off.
As i say the fans are ok, nothing around the unit (boxing in, air flows) has changed but were still getting this HP problem??? Im starting to look at the compressor but can really see how a comp fault could cause this?
Any ideas? (other then replacement of the entire god dam unit)
Thanks,