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#1
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York heat pump
PrecisionMachinisT wrote: So most units will have controls hardware installed that forces them into into a reverse cycle mode in order that mass airflow capacity through the outside coils can be regained--the outdoor fan will stop, yet the compressor and indoors unit still runs....most notably, very cold air will be typoically be felt coming from the inside supply registers if there is no active backup heat during defrost. I've seen that. The indoor fan is blowing cold, the outside fan is off, the compressor is running, and there's a coating of ice all over the fins. I'm curious as to why it's not programmed to stop the indoor fan from running while this defrost cycle is working. Seems to make no sense. Anyway, I appreciate all the input, even if it boors some of you guys. I know I'm getting better info here than I'd get on alt.home.repair. We get the same thing over on sci.med.vision, where I'm a regular contributor. I have learned to skip the obvious and the annoying, and to not waste time on the idiotic. Sorry if I missed a faq that would have solved my problem. Anyhow, I've got lots of ammo for when the boss from the install company comes by. It makes sense that the heater board or whatever defrosts it is out. BTW the serial # someone asked for is: (S) NKNM119678 if that's of any consequense. bill oh and the e-mailer, he has a similar unit and was helpful, but probably wrong in his notion that all heat pumps are designed to crap out at 32 deg. |
#2
Posted to alt.home.repair
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York heat pump
"William Stacy" wrote in message . net... PrecisionMachinisT wrote: So most units will have controls hardware installed that forces them into into a reverse cycle mode in order that mass airflow capacity through the outside coils can be regained--the outdoor fan will stop, yet the compressor and indoors unit still runs....most notably, very cold air will be typoically be felt coming from the inside supply registers if there is no active backup heat during defrost. I've seen that. The indoor fan is blowing cold, the outside fan is off, the compressor is running, and there's a coating of ice all over the fins. I'm curious as to why it's not programmed to stop the indoor fan from running while this defrost cycle is working. Seems to make no sense. During defrost, the unit is essentially running as an air conditioner--the indoors fan needs to be running so that some heat can be picked up from the inside air--this heat is then rejected to the outside for the purpose of melting the ice formation. IF the the indoors fan wasn't running, then insuffient heat supply would likely cause the indoors coil to also quickly freeze up....leading to possible compressor damage due to floodback. Anyway, I appreciate all the input, even if it boors some of you guys. I know I'm getting better info here than I'd get on alt.home.repair. We get the same thing over on sci.med.vision, where I'm a regular contributor. I have learned to skip the obvious and the annoying, and to not waste time on the idiotic. Sorry if I missed a faq that would have solved my problem. Anyhow, I've got lots of ammo for when the boss from the install company comes by. It makes sense that the heater board or whatever defrosts it is out. BTW the serial # someone asked for is: (S) NKNM119678 if that's of any consequense. -- SVL |
#3
Posted to alt.home.repair
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York heat pump
"William Stacy" wrote in message . net... PrecisionMachinisT wrote: So most units will have controls hardware installed that forces them into into a reverse cycle mode in order that mass airflow capacity through the outside coils can be regained--the outdoor fan will stop, yet the compressor and indoors unit still runs....most notably, very cold air will be typoically be felt coming from the inside supply registers if there is no active backup heat during defrost. I've seen that. The indoor fan is blowing cold, the outside fan is off, the compressor is running, and there's a coating of ice all over the fins. I'm curious as to why it's not programmed to stop the indoor fan from running while this defrost cycle is working. Seems to make no sense. Anyway, I appreciate all the input, even if it boors some of you guys. I know I'm getting better info here than I'd get on alt.home.repair. We get the same thing over on sci.med.vision, where I'm a regular contributor. I have learned to skip the obvious and the annoying, and to not waste time on the idiotic. Sorry if I missed a faq that would have solved my problem. Anyhow, I've got lots of ammo for when the boss from the install company comes by. It makes sense that the heater board or whatever defrosts it is out. BTW the serial # someone asked for is: (S) NKNM119678 if that's of any consequense. It is...since any York dealer like myself can post like what we did in alt.hvac for you....you did get that didnt you? bill oh and the e-mailer, he has a similar unit and was helpful, but probably wrong in his notion that all heat pumps are designed to crap out at 32 deg. |
#4
Posted to alt.home.repair,alt.hvac
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York heat pump
"CBHVAC" wrote in message ... "William Stacy" wrote in message . net... Anyhow, I've got lots of ammo for when the boss from the install company comes by. It makes sense that the heater board or whatever defrosts it is out. BTW the serial # someone asked for is: (S) NKNM119678 if that's of any consequense. It is...since any York dealer like myself can post like what we did in alt.hvac for you....you did get that didnt you? Probly not--the concept of logging onto a "follow-up to" newsgroup that an OP has been sent to is perhaps too much an alien concept to all too many folks, IMO... Still, I think the idea does have some merit--IF the process of getting them to actually GO there could be gotten down pat... ( YOU LISTENING TO ALL THIS ****, MR. BERLIN) ??? Anyways...... Cheers, dude. -- SVL |
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