Webasto Thermo Top Z Shop Manual page 24

5 Troubleshooting
5.3.3.2 Error Lockout Reset Thermo Top E and C with
"Telestart"
Eliminate cause of trouble.
Switch off heater using the instant heat switch on the timer
or the Telestart hand transmitter and switch on again.
If heater fails to switch on, perform error lockout reset
according to 5.3.3.4.
An error lockout due to overheating does not have an
indication.
The fuse is not blown in case of overheating.
The error lockout may be cleared by disconnection of the
power supply of the control unit.
Perform error lockout reset according to 5.3.3.4.
wait for
approx.
3 sec.
2 5
2 5
2 0
2 0
A
A 1
A
A
A
Power supply Re-installation of
disconnect by fuse
removal of 20 A fuse
(yellow) in heater
wiring harness
504
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ON
B G 10
Z 8 T
48 0D
T
F W
or
ON
1
A
Momentarily press ON switch left on
transmitter or press
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Thermo Top E and Z/C
5.3.3.3 Error Lockout Reset Thermo Top Z
In case of a malfunction the control unit enters an error
lockout.
The error lockout may only be cleared by disconnection of
the power supply of the control unit (e.g. by removing fuse
F1 (20 A) for at least 30 seconds).
NOTE
The fuse must be removed within 30 seconds
– after starting the engine
– after application of 12 Volts to connector X14,
contact 3
If the supplementary heater nevertheless fails to start,
perform error lockout reset according to 5.3.3.4.
5.3.3.4 Error Lockout Reset after Overheating or after
Three Error Lockouts
wait for
approx.
3 sec.
S E
T
2 5
2 0
A
Power supply
button on timer disconnect by
removal of 20 A fuse
(yellow) in heater
wiring harness
wait for
approx.
3 sec.
2 5
2 0
A
1
1
A
A
A
A
Re-installation of
fuse.
This switches the
heater on.