Unlock the Right Part
for Your Repair
Find the exact part you need
Enter your model number to see parts that fit your machine.
Price Match Guarantee
In-stock parts ship the same day
365-Day Return Policy
Price Match GuaranteeChoose Product
Identify Problem
03
Find Solutions
HomeRepair HelpAmana Central A/C RepairAmana Central air conditioner won't turn on Repair
Amana Central air conditioner won't turn on
When an Amana central air conditioner won't turn on, the problem is usually in the low-voltage control circuit or incoming power, not the compressor or refrigerant system. The most likely cause is a failed transformer, which should send 24 volts from the furnace or air handler to the thermostat and contactor. Next, a defective control board may prevent that signal from reaching the contactor or may fail to power the blower motor. If the thermostat display is blank, replace its batteries, then check for an incoming power problem such as a tripped circuit breaker, blown fuse, or turned-off service switch. A faulty wall thermostat is less common, but it can stop the air conditioner from starting if 24 volts is not sent through the yellow thermostat wire to the contactor. A failed wall thermostat can cause the same symptom. You can safely check the thermostat display, batteries, breaker, fuse, and disconnect switch, but testing 24-volt circuits requires care, and any 240-volt line-voltage work should be handled by a qualified technician. Enter your Amana model number to find the exact replacement transformer, control board, thermostat, or other part for your central air conditioner.
01 - Amana Central Air Conditioner Transformer
The furnace control board sends a low voltage signal of 24 volts to the thermostat. When the themostat cooling contacts close, a 24 volt signal is sent to the contactor coil, closing the high voltage circuit and sending power to the condensing unit components. Some furnaces have a separate transformer for the 24 volt circuit, so if the contactor is not receiving the proper voltage when the thermostat cooling contacts are closed, it's likely this transformer has failed and the component will need to be replaced.
Enter model number to search for the required part specific to your product
Highly Likely
02 - Amana Central Air Conditioner Control Board
If the central air condensing unit contactor is not receiving 24 volts or power is not getting to the furnace blower motor, a possible cause is a defective furnace control board. While this is not a common problem, if all other potentially faulty components are working properly, the control board should 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 transformer. 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 - 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.
Common
05 - Amana Central Air Conditioner Wall Thermostat
The furnace control board sends a low voltage signal of 24 volts to the contactor through the wall thermostat. When the contactor receives the signal from the wall thermostat, it closes the circuit, sending voltage to the condensing unit components. There should be 24 volts between the common (“C”) and yellow (“Y”) thermostat wire terminals on the furnace control board when the wall thermostat is in the cooling mode. You can check for this voltage with a multimeter. If voltage is not reaching the contactor, it's likely the wall thermostat is defective and will need to be replaced.
Less Common
06 - Amana Central Air Conditioner Wifi Thermostat
The furnace control board sends a low voltage signal of 24 volts to the contactor through the WiFi thermostat. When the contactor receives the signal from the WiFi thermostat, it closes the circuit, sending voltage to the condensing unit components. There should be 24 volts between the common (“C”) and yellow (“Y”) thermostat wire terminals on the furnace control board when the WiFi thermostat is in the cooling mode. You can check for this voltage with a multimeter. If voltage is not reaching the contactor, it's likely the WiFi thermostat is defective and will need to be replaced.
Less Common
Frequently Asked Questions
Why is my Amana central air conditioner not turning on?
How do I test an Amana thermostat when the AC won't turn on?
Could the transformer or control board cause my Amana air conditioner not to start?
How do I find the correct replacement part for an Amana central air conditioner?
When should I call a licensed HVAC technician for an Amana AC that won't turn on?
Shop by Amana Central Air Conditioner Parts
Shop by Popular Amana Central Air Conditioner Models
Our Story
Family-owned and operated since 1912, Burke America Parts Group is the longest-running genuine appliance, HVAC, and outdoor power equipment parts solution in North America. At Repair Clinic, we're proud to be an international brand trusted by the pros as well as the DIY community.
About Repair Clinic
© 2026 RepairClinic.com