OTHER FEATURES
Viewing the Time (Ignition OFF)
Briefly press button (5) to display current time
and day for 5 seconds.
Switching Heater ON (Instant Heating) With
Ignition ON:
Press button (7). Heater is switched on
(continuous operation) and continues to operate
until button (7) is pressed again or ignition is
switched off.
Note: If the ignition is switched off while heater
is in operation, the remaining operating time of 5
minutes flashes on the display and the heater
will continue to operate for this period of time.
Switching Heater ON (Instant Heating) With
Ignition OFF:
Press button (7). Heater is switched on for
preset operating time (the factory-set heater
operating duration is 60 minutes)
Switching Heater OFF
Press button (7). The heater starts its after-run
cycle and switches off thereafter.
Presetting Operating Duration
1. Press button (6). Memory location number
flashes.
Note: By repeatedly pressing button (6),
starting time 2 or 3 can be preset.
2. Press button (8) or (9) until correct startup
time is set.
3. Wait 5 seconds. Preset starting time is
stored and day of week flashes.
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 a 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)
3. Wait 5 seconds. Operating time is stored.
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.
Fault Diagnosis by Coded Light Signals
On heaters equipped with a fault diagnosis
system using coded light signals, the equipment-
on indicator/operation indicator flashes. Please
consult your Webasto dealer.
Troubleshooting and Maintenance
The Espar preheater has a diagnostic code
system, so the driver is prevented when
something goes wrong. Codes are listed in
chapter 8 “Technical Information” under “Espar
Preheater Diagnstic Codes”.
Refer to the Maintenance Manual and to
Webasto or Espar manuals for more information.
Note: If there are no heater faults, the heater
will go through a normal start cycle and regulate
based on thermostat setting.
Note: Switch on the preheating system briefly
about once a month, even during the warm
season.
Caution: When welding on the vehicle,
disconnect the preheater module connector in
order to protect this system from voltage surges.
4-15
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