Furnace On, Heatpump Clicking

[MrJoe]

Is this normal? I have the heat pump option. I noticed tonight that when in furnace mode, the overhead heat pump/AC clicks (relay?) several times upon furnace start-up and shut-down. Furnace runs normally. Does it regardless if on battery or 120v. I ran the heat pump with no problem just to see if clicking happens while in heat pump mode. Just on furnace start and stop..?? I never noticed this before.

[Ford Idaho]

What was the air temp before VS air temp now?

Heat pump good to 40 +/- degrees.

[MrJoe]

It was 50 ambient . Finally a nice day! The clicking only happens when in furnace mode and only when the furnace starts and when it turns off.

BTW, my heat pump cuts off at 32 ambient. I know it's less effective below 45.

[Ford Idaho]

Is there a pattern to the clicks, 2 long 1 short or something like that?

Just wondering if the clicks are the pump resetting or error
coding?

[MrJoe]

I'd have to go listen to it again. Seems it was 4 clicks in succession. Does the A/C-Heat Pump transmit codes that way?

[MrJoe]

I was surprised the HP/AC had anything to do with the furnace...

[Ford Idaho]

Originally Posted by MrJoe

I'd have to go listen to it again. Seems it was 4 clicks in succession. Does the A/C-Heat Pump transmit codes that way?

No idea, that's why I ask...

What if anything does the manual for the A/C - heat pump say?

[MrJoe]

I haven't checked the manual. Was hoping to take the shortcut by asking. Everything works fine, just don't remember the relay clicking. I'll research the manuals if nobody has the clicking.

[MrJoe]

In reviewing the installation manual, seems the furnace control runs through the HP/AC control box. I'm thinking the clicking s normal and I just never paid attention to it before.