PREVOST X3-45 2011 - Appendix D - Spheros Preheater Flash Codes

Appendix D – Spheros Preheater Flash Codes
199
OPERATIONAL FAILURE SYMPTOMS VIA FAULT/FLASH CODE
The following table lists the possible faults which can be read by flashing code off of an appropriate timer,
the equipment-on indicator /operation indicator flashes.
Failure Symptom Probable Cause Check and Correct
1X Flash (F 01)
No combustion after
completion of start up
sequence.
- Fuel system
- Combustion air
- Electronic ignition
- Fuel level
- Type of fuel being used
- Fuel filter
- Fuel line connections (air bubbles in fuel lines)
- Fuel nozzle plugged
- Air intake or exhaust, restricted or plugged
- Incorrect electrode gap
2X Flashes (F 02)
Flame out during
burner operation no
restart possible
- Fuel supply (shortage of fuel) - Restriction in the fuel system
- Fuel filter
- Fuel line connections (air bubbles in fuel lines)
- Type of fuel being used
3X Flashes (F 03)
Low voltage for more
than 20 seconds
- Electrical system - Load test batteries
- Corrosion at connections
- Loose connections
4X Flashes (F 04)
Flame detector
recognizes false flame
signal during pre-start
or shut-down cycle
- Defective flame detector - Replace flame detector
5X Flashes (F 05)
Flame detector
- Wiring
- Defective flame detector
- Damaged wiring, open or short circuit
- Replace flame detector
6X Flashes (F 06)
Temperature sensor
- Wiring
- Defective temperature sensor
- Damaged wiring, open or short circuit
- Replace temperature sensor
7X Flashes (F 07)
Fuel solenoid valve
- Wiring
- Defective solenoid valve
- Damaged or corroded wiring, open or short
circuit
- Replace solenoid valve
8X Flashes (F 08)
Combustion air fan
motor
- Wiring
- Wrong RPM
- Defective combustion air fan motor
- Damaged wiring, open or short circuit
- Replace combustion air fan
- Replace combustion air fan
9X Flashes (F 09)
Circulation pump motor
- Wiring
- Defective circulation pump motor
- Damaged wiring, open or short circuit
- Replace circulation pump motor
10X Flashes (F 10)
Temperature limiter
- Overheat condition
- Coolant flow
- Wiring
- Defective temperature limiter
- Reset temperature limiter
- Coolant level or flow restriction
- Air trapped in coolant circuit
- Damaged or corroded wiring, open or short
circuit
- Replace temperature limiter
11X Flashes (F 11)
Electronic ignition coil
- Wiring
- Defective electronic ignition coil
- Damaged wiring, open or short circuit
- Replace electronic ignition coil
12X Flashes (F 12)
Heater lock out
- 3 repeated faults/flame-outs or
5 repeated start attempts
- Reinitialize control unit by switching heater on
and disconnecting power.