PREVOST X3-45 Multiplex - Page 1189

Section 22: HEATING AND AIR CONDITIONING
PA1562
47
4. Press button (8) or (9) to select the correct
startup day of week.
5. Wait 5 seconds. The startup day of week is
stored.
The number of memory location remains on the
display. The timer is now in the programmed
mode and will switch the heater in at the preset
time.
NOTE
We recommend that memory locations 1 and
2 be used for presetting times within 24 hours
of setting the timer. Memory location 3 can be
used for a starting time within the next 7 days
of setting the timer.
Recalling Preset Times
Press (6) repeatedly until the desired memory
location number and preset time are displayed.
Canceling Preset Time
Press button (6) repeatedly until no more
memory location number is visible on the
display.
Setting Operating Time
1. With heater off, press button (8). Operating
time flashes.
2. Press button (8) or (9) to set the operating
time (between 1 and 120 minutes).
The heater remains in operation for the preset
time (except for continuous operation).
Setting the Remaining Operating Time
1. With heater in operation, press button (8).
Remaining operating time flashes.
2. Set remaining time with button (8) or (9).
3. Wait 5 seconds. Remaining operating time
is stored.
Operational Failure Symptoms via
Fault/Flash code
On heaters equipped with a fault diagnosis
system using coded light signals, the
equipment-on indicator/operation indicator
flashes. Refer to the following table.
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
- Damaged wiring, open or short circuit
- Replace combustion air fan