Our extensive Rheem Air Conditioner Repair Guide will help you troubleshoot many issues related to your Amana air conditioner, from replacing your air filter to common problems!
Please note, the following is for informational purposes only. Any servicing you attempt is at your own risk.
Rheem At a Glance
Rheem was founded in 1925, and today they are one of North America’s largest HVAC manufacturers. Along with manufacturing many high-efficiency and standard air conditioners, they also make home heating systems, refrigeration products, and more.
When you purchase a Rheem air conditioner, it’s important to take care of it properly to get the most efficient operation and longest life from the unit. Today we’ll tell you about the common maintenance and repair issues you might encounter with your Rheem cooling system.
How to Replace Your Air Filter
Rheem recommends replacing your air conditioner filter every 90 days, and this will ensure the best air quality in your home, save you money, maximize the unit’s efficiency, and guarantee you get the most years from your air conditioner. Here’s a quick guide to help you through the process of changing the filter:
- Shut off power to the unit to avoid getting a shock
- Find the filter, which is usually found in the return air duct
- Remove the old filter by sliding it out of the slot
- Replace the filter with a new one by using the arrows printed on the filter
- Turn the unit back on
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What’s Wrong With Your Air Conditioner?
Common Air Conditioner Problems and Troubleshooting
Remember to turn your a/c completely off before opening it up to look around or attempt any fix.
Not cooling properly?
This could be something as simple as a thermostat setting, but it could also be that the unit isn’t the right size for your home, or that the refrigerant is low. Signs that the refrigerant is low include the unit blowing hot air, bubbling or hissing noises, ice on the refrigerant line, and fluctuating temperatures.
Compressor won’t run?
When there’s a problem with the compressor, there are many possible causes, including low refrigerant, too much refrigerant, a loose connection, low voltage, and defective contactor or capacitor.
Air conditioner filters can absorb odours from your home, such as smells from cooking or smoke and distribute them throughout the house. The easiest way to fix this problem is to change the filter regularly.
This is likely caused by a dirty or clogged filter, and can be fixed by changing the filter.
Won’t run at all?
There are many potential causes for this problem, including defective control board, power problems, thermostat settings, bad wiring, and high- or low-pressure control problems.
One possible cause of this is the drain pan is full because of a clog, and the leak can cause damage to the unit. If you do notice water leaking, the drain line may need to be unclogged.
Condenser coils can get dirty and need to be cleaned once a year, whereas evaporator coils can be damaged by corrosion and should be serviced every three years.
Rheem Air Conditioner Error Codes
Note that these error codes may or may not be accurate or apply to your system. Each manufacturer has a range of different sensor and error codes used for different model lines and these may differ from one model series, production run, region, and may have been updated at any time. This not a comprehensive list and these are for informational purposes only. Any use of them is at your own risk.
|LED display code||Description|
|0||Standby No command for unit operation|
|c||First Stage Cooling Unit has received a command for first stage cooling|
|c FLASHING||Anti-short cycle timer (3 minutes) or Minimum run timer (30 seconds) active|
|C||Second Stage Cooling Unit has received a command for second stage cooling|
|C FLASHING||Anti-short cycle timer (3 minutes) or Minimum run timer (30 seconds) active|
|P||Protector Trip A command for compressor operation is present but no current is measured to the compressor|
|1||Long Run Time (Compressor) The compressor has continuously run for more than 18 hours in the cooling mode.|
|2||High Side Fault Compressor limit has opened four (4) times within a call for operation|
|3||Short Cycling The ICC detects the run time for the past four (4) compressor cycles is less than three (3) minutes each.|
|L4||Locked Rotor The ICC detects four (4) consecutive protector trips have occurred and the average run time for each trip is less than 15 seconds|
|5||Open circuit (Compressor will not Run) The ICC has received a command for unit operation but no current is present in the start and run circuits The ICC will attempt to restart the unit every five (5) minutes for four (4) attempts. After that, the ICC will attempt a restart every twenty (20) minutes for up to four (4) hours. The ICC has had a protector trip for longer than 4 hours.|
|6||Compressor Open Start Circuit The ICC detects current in the Run circuit but not in the Start circuit of the compressor|
|L6||Compressor Open Start Circuit The ICC detects current in the Run circuit but not in the Start circuit of the compressor four (4) times in one compressor call|
|7||Compressor Open Run Circuit The ICC detects current in the Start circuit but not in the Run circuit of the compressor|
|L7||Compressor Open Run Circuit The ICC detects current in the Start circuit but not in the Run circuit of the compressor four (4) times in one compressor call|
|9||Low Secondary Volts The secondary voltage at R and C is below 18V AC|
|21||Low Pressure Control Open The ICC detects the LPC is open. Note: The low pressure control is ignored for the first 90 seconds of compressor operation|
|L 21 FLASHING||Active Protection Low Pressure Control Trip|
|27||Low Line Voltage or No Line Voltage Fault|
|28||High Line Voltage Fault|
|29||High Pressure Control Open The ICC detects the HPC is open|
|L 29 FLASHING||Active Protection High Pressure Control Trip|
|The ICC detects the on-board fuse is open|
|80||Low Air Row The ICC detects that the indoor unit is not providing the minimum airflow requirements.|
|83||Condenser Coil Temperature Fault The sensor detects an abnormally low or high coil temperature|
|84||Outdoor Ambient Temperature Fault The sensor detects an abnormally low or high outdoor ambient temperature|
|93||Internal Control Fault The control is not functioning properly.|
|d1||No Shared Data|
|d3||Airflow CFM Mismatch The indoor air mover (air handler/fumace) cannot supply the required airflow for proper system operation|
|D4||(Device) Memory Card Invalid for Device The data in the memory card inserted into the control board does not match the data in the control.|
|d8||Old Shared Data System data is obsolete|
When to Get a Technician for Air Conditioner Repairs
While you can address some air conditioner maintenance and problems yourself, some require help from a licensed technician. A few of these problems include:
- Unit is operating erratically
- There’s a problem with the compressor or coils
- You smell burning coming from the unit
- Unit won’t run or cool properly, and it’s not because of a thermostat setting
- Circuit breaker keeps tripping, or power fuse keeps blowing
- Power cord is damaged or getting hot
- Refrigerant Leaks
- Unit is making loud and strange sounds
- Wiring or electrical problems
- Unit is leaking, or water is dripping onto it
If you encounter any of these problems or suspect them, you should turn the unit off right away and don’t turn it back on until it’s been serviced by a licensed technician.
Who to Call For Air Conditioner Repairs
When your air conditioner breaks down or requires maintenance or repairs, it’s important to seek help to ensure your comfort and to keep the unit in good working order. But if you don’t know who to trust for air conditioner maintenance, then choosing the right HVAC company can be daunting.
To help you find the right technician, we’ve created an independent HVAC contractor certified partners page that can help you find a company that has all the right licenses and insurance, a good reputation, experience in the field, and more.
Rheem’s Warranty Coverage
New Rheem air conditioners are all protected by a warranty that could save you hundreds or thousands of dollars on repair costs. The warranty terms depend on the model of your cooling system.
Air conditioners in Rheem’s prestige series come with a 10-year limited parts warranty. Models from their Classic series come with a 5-year limited parts warranty, as well as a 10-year conditional parts warranty. To be eligible for the limited warranty, certain conditions must be met regarding registration, installation, and ownership.
Protect your Rheem air conditioner: Register and access your Rheem A/C warranty here
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