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I have a carrier heatpump unit. 20yrs old. the contacts need to be changed. i can't get the first spring loaded contact out. what's the trick without tear it up? this is for the a/c side.

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This is a one peice deal, the contact switch on the outside condensor that has two smaller wires and biger wires coming to it all replace together. Remember your wiring and get a whole new double pole contact switch.

Posted on Jul 06, 2008

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It is more likely the motor or the fan causing the problem at this point [or you got a bad used board].
First with the power off try rotating the fan by hand to make sure it turns freely. If it turns hard or is stuck you know the cause. If it has places to oil the bearings, add a couple drops to both ends of the blower shaft and the motor shaft and try spinning again by hand. It could be the blower relay contacts are burned and making bad contact or possibly the motor capacitor or start windings are bad. Without a model number, I can't tell what controls your unit uses. At least Carrier is one of the better companies in providing manuals and wiring diagrams.
Carrier Literature Wiring Diagrams
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Is a carrier 38tkb024300 an AC unit or a heat pump? Heating does not work?


Hi,
Yes, it should be a a heatpump...
The problem could be the reversing valve or the t-stat...those are the most common problems for them not heating if the cooling still works..

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Wiring diagram for Rheem rpka-31 jaz heatpump


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Looking for auto restart on carrier 40GKX series


Can you please check if the remote handset is this?d6f691e.png if yes, follow below

• Connect the system to the electrical current.
• Press the button M and of the remote control and keep them pressed down for at least
5 seconds.
• The clock digits show the first configuration item (rAdr = remote address) and the temperature
digits show the default value of the respective configuration item (Ab = control of both indoor
units).
• Press the button M repeatedly until "ASt " appears.
• Press the buttons ∧ or ∨ to change the default value (OF) to the new value (ON).
• Press the button to send the new configuration to the unit.
• Press the button to exit the configuration menu.
To see other available configuration options, consult the table.

Item Viewfinder display Explanation Description

1
1 "rAdr" "A": remote unit A Remote address of indoor unit A.
"b": remote unit B Remote address of indoor unit B.

"Ab": remote units A and B Default address of the two units.
2 "UCFG" "HP": Heatpump Default address and heatpump
"AC": Cooling only Changes the cooling-only address

3 "UAdr" 1-240 with an increment of 1 Address of the CNN unit.
Default = 1.

4 "ZONE" 1-240 with an increment of 1 Zone number.
Default = 0.

5 "GFdn" 1-240 with an increment of 1 GFD number.
Default = 1.

6 "A St" "OF" : Shutdown mode Select the function mode after an
"On" : Automatic restart electrical power failure.

If no button is pressed for 30 seconds, the remote control automatically exits the
configuration menu and the entire procedure must be restarted.
NOTE

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1 Answer

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