Results 1 to 6 of 6
Thread: heat exchange unit won't stop
-
16-01-2010, 04:52 PM #1
heat exchange unit won't stop
Hello,
I've got a HEIL HHP060 heat exchange unit outside that won't stop. The air blower inside follows the thermostat's command but it looks like the compressor keeps running; I've waited for more than 2hours and it just keeps running.
It sounds like a contactor is stuck but based on the electrival diagram posted in the unit the contactor is whithin a capacitor. Is this possible and if so how can I test the capacitor to find out if it went bad? My ohmeter shows that all three connections of the capacitor are connected which I didn't expect if a contactor is embedded.
I'v swaped out the thermostat just in case but that didn't help.
Any suggestion? Am I focusing on a wrong issue?
-
16-01-2010, 05:44 PM #2
Re: heat exchange unit won't stop
Clearly - welded contact in the relay.
Relay is inside of the indoor unit.
-
16-01-2010, 07:15 PM #3
Re: heat exchange unit won't stop
Thanks Yuri.
Is there a voltmeter / ohmmeter test i could perform to confirm the failure?
-
16-01-2010, 07:45 PM #4
Re: heat exchange unit won't stop
If the relay is on but has no power feed from the thermostat to the coil then its stuck in, the relay is not in the capacitor.
Your outdoor unit could have a short on it if the relay is off and its still running, (maybe fan running but not at full speed?)
Best to turn it off at the disconnect and get a tech to look at it.
-
16-01-2010, 09:32 PM #5
Re: heat exchange unit won't stop
Is there a voltmeter / ohmmeter test i could perform to confirm the failure?
If yes,you may try to knock , carefully, at the relay, but better change it, and find out what had caused the too high current that had made the relay's contact stuck.
-
18-01-2010, 06:49 PM #6
Re: heat exchange unit won't stop
Replacing the relay fixed it!
Thanks again Yuri.
Regards,
Similar Threads
-
Capacity control
By sparrow in forum TrainingReplies: 44Last Post: 18-01-2010, 07:49 PM -
First post, please be nice, prob with heat mode
By back2space in forum Air ConditioningReplies: 93Last Post: 28-06-2009, 09:18 PM -
LG heat pump problem
By back2space in forum Heat PumpsReplies: 132Last Post: 01-02-2009, 11:23 PM -
Super efficient, low carbon footprint, etc etc - ideas?
By Makeit go Right in forum Air ConditioningReplies: 8Last Post: 05-12-2007, 05:56 PM -
heat exchanger for small chiller
By star882 in forum FundamentalsReplies: 4Last Post: 30-01-2007, 12:06 PM