heat pump noise

[Guest]

have you got any ideals. why a heat pump would make a banging noise right before it goes into defrost mode.it bangs hard enough to really shake the linesets. any thoughts anyone?? thanks

[Yanita]

Hi and welcome to the site.

Would you please read the posting tips at the main page of the HVAC forum and then edit your post to include the info the techs will need. This will assure you a quicker response time.

I am also going to move this to the Service and Repair of Other Brands.

Thanks,

Yanita

[Robert]

Faulty reversing valve/rev. valve solonoid maybe.


Thanks,
Robert

[Guest]

thanks robert for your reply. iwas thinking that but wanted to make sure thanks again

[Robert]

You're very welcome. Just a guess from here, but since it reverts back to a/c mode for defrost, rev. valve/rev. valve sol. are in the act.

Refr. lines are connected to the valve, so I would look there first.



Take care and best wishes,
Robert