Machine Preheaters for Wheel Harvesters Caterpillar

Preheater Troubleshooting

Usage:

570 4XR

General Troubleshooting Symptom

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Table 1
Fault	Probable Cause	Remedy
Heater switches off automatically	No combustion after start or repeat start of the machine preheater.	Control unit will switch to error lockout. Switch the heater off and on.
	Flame extinguishes during operation	If a no-heating condition persists contact your Caterpillar dealer.
	Heater overheats due to low coolant	Replenish coolant. After cooldown of the unit, push the button of the temperature limiter before restart or, replace the temperature limiter.
	Low voltage condition for more than 20 seconds	Check all fuses and connections. Check the state of charge of the battery.
	Machine preheater switch off caused by the temperature limiter	After cooldown of the unit, push the button of the temperature limiter before restart or, replace temperature limiter.

Note: In many cases, the probable cause of failure may be the burner. Perform a visual inspection of the burner.

Reference: For additional information on a visual inspection of the machine preheater, refer to Systems Operation/Testing And Adjusting, "Visual Inspection" for the machine that is being serviced.

Troubleshooting Symptom After Switch-Off

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Table 2
Fault	Probable Cause	Remedy
No function	Electrical wiring, fuses	Check fuses Check battery connections
No function	Control unit defective	Replace control unit
1 Flash pulse F 01 (no start)	Fuel system	Check fuel level Check fuel filter Bleed fule system
	Combustion air/exhaust duct	Check combustion air/exhaust duct for foreign matter and clean as required
	Burner	Clean burner or replace as necessary
2 Flash pulses F 02 (flame-out during operation)	Fuel supply	Check fuel level Check fuel filter Bleed fuel system
2 Flash pulses F 02 (flame-out during operation)	Burner	Clean burner and replace as necessary
3 Flash pulses F 03 (low voltage)	Electrical power supply	Check battery (load test) Check electrical connections
4 Flash pulses F 04 (flame sensor continuously hot)	Flame sensor faulty	Replace flame sensor
5 Flash pulses F 05 (flame sensor)	Wiring	Check wiring for damage, open connections, or short circuits
5 Flash pulses F 05 (flame sensor)	Flame sensor faulty	Replace flame sensor
6 Flash pulses F 06 (temperature sensor)	Wiring	Check wiring for damage, open connections, or short circuits
6 Flash pulses F 06 (temperature sensor)	Temperature sensor faulty	Replace temperature sensor
7 Flash pulses F 07 (fuel metering pump)	Wiring	Check wiring for damage, open connections, or short circuits
7 Flash pulses F 07 (fuel metering pump)	Fuel metering pump faulty	Replace fuel metering pump
8 Flash pulses F 08 (combustion air fan)	Wiring	Check wiring for damage, open the connections or short circuit
8 Flash pulses F 08 (combustion air fan)	Combustion air fan faulty	Replace the combustion air fan
9 Flash pulses F 09 (glow pin)	Wiring	Check wiring for damage, open connections or short circuit
9 Flash pulses F 09 (glow pin)	Glow pin faulty	Replace glow pin
10 Flash pulses F 10 (temperature limiter)	Coolant circuit	Check coolant level Bleed coolant circuit Reset temperature limiter
10 Flash pulses F 10 (temperature limiter)	Wiring	Check wiring for damage, open connections or short circuit
11 Flash pulses F 11 (coolant circulation pump)	Wiring	Check wiring for damage, open connections or short circuit
11 Flash pulses F 11 (coolant circulation pump)	Coolant circulation pump faulty	Replace coolant circulation pump