Comfortmaker Air Conditioner Error Codes Some models are factory equipped with the Comfort Alert Diagnostics device in the control box.
Comfortmaker Air Conditioner Error Code Solutions
| Status LED | Status LED Description | Status LED Troubleshooting Information |
|---|---|---|
| Green “POWER” | Module has power | Supply voltage is present at module terminals |
| Red “TRIP” | Thermostat demand signal Y1 is present, but the compressor is not running | 1. Compressor protector is open 2. Outdoor unit power disconnect is open 3. Compressor circuit breaker or fuse(s) is open 4. Broken wire or connector is not making contact 5. Low pressure switch open if present in system 6. Compressor contactor has failed open |
| Yellow “ALERT” Flash Code 1 | Long Run Time Compressor is running extremely long run cycles | 1. Low refrigerant charge 2. Evaporator blower is not running 3. Evaporator coil is frozen 4. Faulty metering device 5. Condenser coil is dirty 6. Liquid line restriction (filter drier blocked if present in system) 7. Thermostat is malfunctioning |
| Yellow “ALERT” Flash Code 2 | System Pressure Trip Discharge or suction pressure out of limits or compressor overloaded | 1. High head pressure 2. Condenser coil poor air circulation (dirty, blocked, damaged) 3. Condenser fan is not running 4. Return air duct has substantial leakage 5. If low pressure switch present in system, check Flash Code 1 information |
| Yellow “ALERT” Flash Code 3 | Short Cycling Compressor is running only briefly | 1. Thermostat demand signal is intermittent 2. Time delay relay or control board defective 3. If high pressure switch present go to Flash Code 2 information 4. If low pressure switch present go to Flash Code 1 information |
| Yellow “ALERT” Flash Code 4 | Locked Rotor | 1. Run capacitor has failed 2. Low line voltage (contact utility if voltage at disconnect is low) |
| Yellow “ALERT” Flash Code 5 | Open Circuit | 1. Outdoor unit power disconnect is open 2. Compressor circuit breaker or fuse(s) is open 3. Compressor contactor has failed open 4. High pressure switch is open and requires manual reset 5. Open circuit in compressor supply wiring or connections6. Unusually long compressor protector reset time due to extreme ambient temperature 7. Compressor windings are damaged |
| Yellow “ALERT” Flash Code 6 | Open Start Circuit Current only in run circuit | 1. Run capacitor has failed 2. Open circuit in compressor start wiring or connections 3. Compressor start winding is damaged |
| Yellow “ALERT” Flash Code 7 | Open Run Circuit Current only in start circuit | 1. Open circuit in compressor run wiring or connections 2. Compressor run winding is damaged |
| Yellow “ALERT” Flash Code 8 | Welded Contactor Compressor always runs | 1. Compressor contactor has failed closed 2. Thermostat demand signal not connected to module |
| Yellow “ALERT” Flash Code 9 | Low Voltage Control circuit < 17VAC | 1. Control circuit transformer is overloaded 2. Low line voltage (contact utility if voltage at disconnect is low) |
- Flash Code number corresponds to a number of LED flashes, followed by a pause and then repeated.
- TRIP and ALERT LEDs flashing at same time means control circuit voltage is too low for operation.
- Reset ALERT Flash code by removing 24VAC power from module.
- Last ALERT Flash code is displayed for 1 minute after module is powered on.
Safety Considerations
Consult a qualified installer, service agency, or the dealer/ distributor for information and assistance. The qualified installer must use factory authorized kits and accessories when modifying this product. Refer to the individual in- structions packaged with the kit or accessory when instal- ling.
The weight of the product requires careful and proper handling procedures when lifting or moving to avoid per- sonal injury. Use care to avoid contact with sharp or pointed edges.
Follow all safety codes. Wear safety glasses, protective clothing, and work gloves. Use a heat sinking material such as a wet rag – during brazing operations. Keep a fire extinguisher available. Consult local codes and the National Electric Code (NEC) for special requirements.
What Sets Comfortmaker Air Conditioners & Heat Pumps Apart?
- Durable galvanized steel construction with baked-on paint finish weathers seasonal extremes.
- Post-painted fin stock and coated wire grille guard against corrosion. The grille spacing protects the coil but allows for easy cleaning.
- Scroll compressor operates with proven efficiency and reliability.
- Control panel allows for easier, quicker service access.
- Compressor is housed in an extra-thick shell for added protection and durability.
- Top-discharge design improves airflow and minimizes noise.
- Durable copper tubing, aluminum fin coil, and fins that are post-painted for protection help maintain efficiency.
- Integrated solid state controls make the change from heating to cooling go smoothly. (Heat pump only)