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Comfortmaker AC Error Codes and Troubleshooting

 Some models are factory equipped with the Comfort Alert Diagnostics device in the control box.

Comfortmaker AC Error Codes and Troubleshooting
Comfortmaker AC Error Codes and Troubleshooting
Status LEDStatus LED DescriptionStatus LED Troubleshooting Information
Green “POWER”Module has powerSupply 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 Rotor1. Run capacitor has failed

2. Low line voltage (contact utility if voltage at disconnect is low)
3. Excessive liquid refrigerant in compressor
4. Compressor bearings are seized
Yellow “ALERT”
Flash Code 5		Open Circuit1. 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 connections

6. 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)

 

Comfortmaker Air Conditioner Troubleshooting
Comfortmaker Air Conditioner Troubleshooting

 

  • 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?

What Sets Comfortmaker Air Conditioners & Heat Pumps Apart
What Sets Comfortmaker Air Conditioners & Heat Pumps Apart
  1. Durable galvanized steel construction with baked-on paint finish weathers seasonal extremes.
  2. Post-painted fin stock and coated wire grille guard against corrosion. The grille spacing protects the coil but allows for easy cleaning.
  3. Scroll compressor operates with proven efficiency and reliability.
  4. Control panel allows for easier, quicker service access.
  5. Compressor is housed in an extra-thick shell for added protection and durability.
  6. Top-discharge design improves airflow and minimizes noise.
  7. Durable copper tubing, aluminum fin coil, and fins that are post-painted for protection help maintain efficiency.
  8. Integrated solid state controls make the change from heating to cooling go smoothly. (Heat pump only)

 Comfortmaker Air Conditioner Manual PDF

Source: comfortmaker.com

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