ICP Furnace Troubleshooting guide

International comfort products

International comfort products work in the design, manufacturing, and marketing of heating and cooling products. Founded in 1979, ICP equipment parts are simple to install and maintain. PartsHnC sells quality equipment parts of International Comfort Products. 

ICP gas furnace:

Make summer comfortable with a variable-speed blower motor and the two-stage operation features. Know more features of the international comfort products gas furnace.

• Up to 96% AFUE (Annual fuel utilization efficiency) in up-flow 
• And horizontal positions 95% AFUE in downflow position
• Supports both 1-stage and 2-stage cooling units
• Dehumidification feature in cooling
• Variable-speed, constant torque ECM (Enterprise content management) blower motor for extra SEER (Seasonal energy efficiency ratio) boost with select cooling equipment
• Flame roll-out sensors standard
• Modifiable heating blower OFF delay
• Factory set blower ON delay
• RPJ® primary heat exchanger
• Stainless-steel secondary heat exchanger
• High-temperature limit control designed to prevent overheating
• Operates at more peaceful, lower heating rates
• Two-speed induced draft combustion blower
• Variable speed, constant torque ECM blower motor
• Fully insulated steel cabinet
• Convertible to liquid propane with an accessory pack

Error codes:

Read the following error codes of the ICP furnace to understand the problem.

1. ON/ OFF steady pattern for lockout problem
2. 2 blinks- a problem in the pressure switch
3. 3 blinks- an issue in the low-pressure switch
4. 4 blinks- a fault in a limit circuit
5. 5 blinks- flame-proving signal fault
6. 6 blinks- ignition problem
7. 7 blinks- lockout in limit circuit
8. 8 blinks- lockout in gas heating
9. 9 blinks- problem in medium pressure switch or high-pressure switch
10. 10 blinks- Because of polarity
11. Code 1+2- blower on after power-up
12. Code 1+5- lockout in the blower motor
13. Code 3+5- problem with gas fault
14. Code 4+1- issue in the blower motor
15. Code 4+2- fault in inducer motor
16. Code 4+3- because of a low-pressure switch or medium-pressure switch
17. Code 6+1- ignition lockout

Problems and Troubleshooting:

Furnaces give problems because of various reasons. Know more about problems and troubleshooting of the International comfort products’ furnace.

ICP furnace not starting:

Thermostat battery problem:

• Open the thermostat battery. Check battery power
• If the battery is totally discharged, then replace it 
• And then set the switches of the thermostat on heat, and the fan set on auto

Failed breaker box:

• Inspect your furnace breaker box
• The breaker box is tripped
• Check the position of the switches, then set it on and reset the breaker

The problem with the pressure switch:

• Set the switch to ON mode
• Check if your furnace has turned off
• If the blower cover is open, then it prevents the furnace from running. So, close the cover definitely

Troubleshooting for condensate pump

• In high-efficiency condenser conditions, furnace water is produced as a byproduct
• You can remove extra water using the condensate pump
• The condensate pump has an overflow of safety switches
• Inspect if the pump motor is working properly or not and if there is any blockage
• If any blockage is found, then clear it or call service providers

Solution for safety switches problem:

• If your furnace is running on power, then the furnace is in a lockout

• Modern furnaces come with many switches. Because of that switch, shut down the furnace when safety switches show an unsafe condition
• Every time a lockout happens, the furnace shows flashing lights as color codes to identify the source of the shutdown
• All color codes are unique to each model
• Color codes help to find out the correct problem
• Read all color code meanings. If you did not understand call, local technical professionals

The furnace is not heating:

Faulty igniter:

• Remove igniter from the furnace
• Check for any cracks
• Or, use a multimeter to determine if there is a crack 
• Because cracked ignitor breaks the electric circuit
• If there is no electric continuity, then you need to replace it

Malfunctioning flame sensor

• The malfunctioning flame sensor failed to detect a flame, causing the control board to shut off voltage to the gas valve
• If the flame sensor is dirty, then clean it with a fine abrasive pad
• If a still sensor does not work, then replace it

Faulty draft inducer motor

• When a draft motor is energized, pressurized, or a vacuum is created, activating a switch through a tube and port is located
• The damaged draft inducer motor may not maintain the proper airflow, stalling the ignition process knows that poor airflow is often the result of insufficient ventilation or a restricted exhaust vent
• Make your furnace in a systematic ventilated location and the exhaust vent is clear of obstructions

Failed control board

• The control board regulates the power supply to all the furnace components
• If the control board fails, it might not send voltage to the ignition system which will prevent the furnace from heating
• Fix the problem or replace the control board 

Defective flame rollout switch

• A flame rollout switch monitors the heat surrounding the burner
• If there are airflow problems, the switch will open and halt the ignition process
• A defective flame rollout switch may open 
• If the airflow is good, most rollout switches have a reset button. So, you should first press the button to confirm you can reset the switch as with the igniter. 
• You can use a multimeter to test the electric continuity to determine if the part is in good condition or not
• Replace the damaged flame rollout switch

The malfunctioning gas valve assembly

• The gas valve opens to allow gas to enter the burner
• The malfunctioning valve may not open, as with the igniter and flame rollout switch
• You can use a multimeter to determine electrical continuity
• If the gas valve assembly is damaged, then we will need to replace it

Defective pressure switch 

• Proper airflow will cause the pressure switch to close, allowing the ignition process to continue
• A defective pressure switch may not close again
• You can use a multimeter to test the continuity provided the switch is connected to the furnace and the draft inducer motor is running

PartsHnC sells all heating, ventilation, and air conditioning equipment parts of the International Comfort Products. Want to buy any HVAC parts and accessories? Then visit the website https://partshnc.com/. Send any queries to [email protected] or just call us at (866) 963-0907.