Manual for COMFORTPRO PC6000 - Troubleshooting and error codes + PDF Download

Manual for COMFORTPRO PC6000 - Troubleshooting and error codes + PDF Download

Brand: Carrier

Category: HVAC Controller

Manual Type:

Language:

Uploaded: April 8, 2025, 3:37 a.m.

Manual Publish Date: 2006-01-01

Warranty Summary

No warranty information provided in this manual.
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The Carrier ComfortPro PC6000 operates in two modes: Manual and Automatic.

Manual Mode: Start the APU using the On/Off button. Control fan, heater, and A/C via the DCP. HVAC cycles to maintain set temperature. APU remains on until manually turned off, unless Maximum Run Time is reached.

Automatic Modes:

  • Comfort Monitor: Maintains bunk temperature by automatically starting/stopping APU & HVAC.
  • Timer: Starts APU & HVAC at a set time for a duration.
  • Cold Weather Watch: Prevents engine freeze by starting heater when cold.
  • Battery Monitor: Recharges batteries for 90 minutes when low.

In automatic mode, manual overrides switch to manual operation.

Troubleshooting and error codes

SYMPTOM PROBABLE CAUSE SOLUTION REFERENCE
Engine does not start (starter works)
  • No fuel
  • Air in the fuel system
  • Water in fuel system
  • Fuel solenoid not pulling in
  • Fuel pipe/line clogged
  • Fuel filters clogged
  • Excessively high viscosity of engine oil at low temperature
  • Fuel leak due to loose injection pipe retaining nut
  • Injection nozzle clogged/defective
  • Injection pump defective
  • Fuel lift pump defective
  • Low cylinder compression
  • Valve spring broken, valve stuck
  • Excessive valve clearance
  • Glow plugs malfunctioning
  • Plugged air filter
  • Check fuel stand pipe length
  • Bleed air
  • Drain fuel tank(s) and replace fuel filters
  • Check for rust in plunger/check for voltage
  • Check for bent solenoid linkage
  • Clean/replace
  • Replace
  • Use the specified engine oil
  • Tighten nut
  • Clean/replace
  • Replace
  • Replace
  • Repair/replace engine
  • Repair/replace
  • Adjust
  • Check/replace
  • Clean/replace
  • A-8
  • A-8
  • A-8
  • A-2
  • Kubota Manual*
  • Kubota Manual*
  • Kubota Manual*
  • Kubota Manual*
  • Kubota Manual*
  • Kubota Manual*
  • Kubota Manual*

Troubleshooting and error codes

SYMPTOM PROBABLE CAUSE SOLUTION REFERENCE
Engine does not start (starter works)
  • No fuel
  • Air in the fuel system
  • Water in fuel system
  • Fuel solenoid not pulling in
  • Fuel pipe/line clogged
  • Fuel filters clogged
  • Excessively high viscosity of engine oil at low temperature
  • Fuel leak due to loose injection pipe retaining nut
  • Injection nozzle clogged/defective
  • Injection pump defective
  • Fuel lift pump defective
  • Low cylinder compression
  • Valve spring broken, valve stuck
  • Excessive valve clearance
  • Glow plugs malfunctioning
  • Plugged air filter
  • Check fuel stand pipe length
  • Bleed air
  • Drain fuel tank(s) and replace fuel filters
  • Check for rust in plunger/check for voltage
  • Check for bent solenoid linkage
  • Clean/replace
  • Replace
  • Use the specified engine oil
  • Tighten nut
  • Clean/replace
  • Replace
  • Replace
  • Repair/replace engine
  • Repair/replace
  • Adjust
  • Check/replace
  • Clean/replace
  • A-8
  • A-8
  • A-8
  • A-2
  • Kubota Manual*
  • Kubota Manual*
  • Kubota Manual*
  • Kubota Manual*
  • Kubota Manual*
  • Kubota Manual*
  • Kubota Manual*