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HomeRepair HelpAmana Central A/C RepairAmana Central air conditioner wall thermostat not working properly Repair
Amana Central air conditioner wall thermostat not working properly
When an Amana central air conditioner thermostat is not working, the wall thermostat is the most likely cause. A thermostat may have a blank display, fail to send a cooling signal, or stop communicating with the furnace, air handler, or outdoor unit. First, check and replace the wall thermostat batteries if the display is dead. If the thermostat still does not work, the thermostat itself may need replacement. Next, inspect the thermostat wire for damage or loose connections, since faulty wiring can prevent the thermostat from turning on the AC or communicating with the system. A failed control board in the furnace or air handler can also stop 24-volt power from reaching the thermostat. If the indoor unit has no indicator lights, check for a blown fuse, tripped circuit breaker, or power switch that is turned off. Enter your Amana central air conditioner model number to find the exact replacement thermostat, wall thermostat, control board, fuse, or other part for your system. Battery and thermostat replacement are generally DIY repairs, but turn off power first. Troubleshooting the control board or incoming line voltage involves electrical hazards, and 240-volt work should be handled by a qualified technician.
01 - Amana Central Air Conditioner Wall Thermostat
The wall thermostat is responsible for controlling components and regulating the home's temperature. The thermostat can be powered with 24 volts from a control board on a separate unit like a furnace or air handler, or from batteries in the thermostat itself. The thermostat also has terminals to receive and distribute low voltage 24 volt power to run different HVAC products such as a furnace, air conditioner, or heat pump. If the wall thermostat is receiving power but the display is dead, or it will not send power out in the appropriate modes, the wall thermostat will need to be replaced.
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Highly Likely
02 - Amana Central Air Conditioner Wifi Thermostat
The WiFi thermostat is responsible for controlling components and regulating the home's temperature. The thermostat is usually powered with 24 volts from a control board on a separate unit like a furnace or air handler. The thermostat also has terminals to receive and distribute low voltage 24 volt power to run different HVAC products such as a furnace, air conditioner, or heat pump. If the WiFi thermostat is receiving power but the display is dead, or it will not send power out in the appropriate modes, the WiFi thermostat will need to be replaced.
Highly Likely
03 - Wall Thermostat Batteries
Most wall thermostats are either powered by an enclosed battery or by the furnace or air handler control board. If the thermostat display is dead, you can remove the thermostat cover and look for replaceable batteries. Replace the batteries if needed and check operation.
Common
04 - Amana Central Air Conditioner Control Board
The control board regulates the power supply to all of the components in the system. If the control board fails, it might not send voltage to the thermostat, leaving the thermostat inoperable.
Less Common
05 - Incoming Power Problem
Check to see if there is power to the furnace or air handler. One or more indicator lights on the control board should be illuminated. If there is no power to the furnace or air handler, check to see if a circuit breaker has tripped or a fuse has blown. Confirm the power switch on the side of the unit is turned on.
Less Common
06 - Bad Wall Thermostat Wiring
In order to send signals from and to the indoor and/or outdoor units, the wall thermostat uses a group of wires usually called thermostat wiring. If the thermostat wiring gets damaged, certain functions of the system or the thermostat itself may not function properly. The thermostat wiring can be checked for power or continuity with a multimeter. The wiring is usually industry standard colors: Red/White/Yellow/Green for a four-wire system.
Less Common
Frequently Asked Questions
Why is my Amana central air conditioner thermostat not working?
Why is my thermostat not turning on the AC even though the display works?
How do I troubleshoot an Amana thermostat that is blank or not communicating with the air conditioner?
Should I replace the wall thermostat or the control board first?
How do I find the correct replacement thermostat for my Amana central air conditioner?
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