Heat pump iced up

Reply

  #1  
Old 11-14-18, 07:35 PM
Member
Thread Starter
Join Date: Nov 2018
Posts: 2
Heat pump iced up

My 4 ton good man heat pump is freezing up,I don't hear the swish noise in the basement like the reversevalve is working but my ac works and the heat works so could it be a defrost issue and if I turn on the AC would that defrost my outside unit,just wondering.
 
Sponsored Links
  #2  
Old 11-14-18, 08:38 PM
PJmax's Avatar
Group Moderator
Join Date: Oct 2012
Location: Northern NJ - USA
Posts: 50,627
Likes Received: 112
Welcome to the forums.

Are you talking about the outside condenser freezing up when in heating mode ?

If you are in heating mode the condenser should defrost automatically. For a heat pump to defrost...... it is run in the A/C mode and uses warm air from inside the house to defrost the condenser outside. Some units defrost when a sensor senses ice and some defrost every xx hours of run time. A system low on refrigerant will also freeze up quickly.
 
  #3  
Old 11-15-18, 09:06 PM
Member
Thread Starter
Join Date: Nov 2018
Posts: 2
Yes the outside unit doesn't defrost and my unit doesn't turn off and the temp is only about 30 degrees,so if my account and heat still work does that mean it's not the reverse valve,and maybe a timer or sensor,it's on a good man 4 ton unit
 
  #4  
Old 11-16-18, 02:07 AM
Member
Join Date: Jan 2017
Location: USA
Posts: 485
You need to call for a service tech well versed in heat-pumps. By your description I have to assume a defective defrost control, ice build-up sensor or other control that initiates or controls the defrost cycle. You can not turn the unit onto A/C to get the outdoor to defrost. There is more to the defrost cycle than just running the unit on A/C.
 
  #5  
Old 11-16-18, 05:54 PM
PJmax's Avatar
Group Moderator
Join Date: Oct 2012
Location: Northern NJ - USA
Posts: 50,627
Likes Received: 112
my unit doesn't turn off
You need to be specific with the problem. What doesn't turn off ?

Defrost is running the system in A/C mode BUT the condenser fan is cycled to maintain the proper amount of heat transfer so just putting the system into A/C manually is not the most effective way to defrost the unit.

With a full model number of the outside condenser I may be able to help you further but on your part you will most likely need a meter to make tests.
 
Reply

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Thread Tools
Search this Thread
Display Modes