ClimateMaster Heat Pump: Heating / Cooling

Re: Code 6

Code 6 = Condensate Overflow

• The condensate overflow sensor must sense overflow level for 30 continuous seconds to be recognized as a CO fault.
• Condensate overflow will be monitored at all times.

CHECKOUT:

1. Check CO Sensor

• Turn off power to the unit.
• Open the blower door to access the coil and drain pan.
• Inspect drain pan to see if it is full of water.
• Inspect the CO sensor to ensure that it is not touching anything.

2. Check Drain Hose

• Inspect the clear, rubber drain hose connecting the coil to the drain outlet.
  • Very common for the hose to become clogged.

3. Check Drain Line

• If the unit is internally trapped (rubber drain hose), there must be an open air vent in the pvc drain immediately upon exiting the unit.
• If the unit is not internally trapped, an external drain trap is required.

4. Test Drainage System

• Test the drainage system by manually filling the drain pan with water.
• Ensure that water exits the drain promptly and completely.