Installation manual

Webasto Thermo & Comfort N.A., Inc. 36 www.techwebasto.com
Troubleshooting Thermo Pro 90
5x N/A
6x Coolant temperature sensor interrupt or temperature sensor short-circuit
7x Metering pump interrupt or metering pump short-circuit
8x Blower motor interrupt or blower motor short-circuit or blower motor incorrect speed
9x Glow plug interrupt or igniter short-circuit
10x Overheating
11x Circulating pump interrupt or circulating pump short-circuit
12x Battery main switch short circuit
13x Output vehicle fan short circuit
14x Overheating protection defective
15x Reference resistance not reached during start
16x Exhaust gas temperature too high
17x Exhaust temperature sensor defective
14.3.2 Version with timer
If the system is equipped with a digital timer, a fault message appears on the display of the timer after a fault occurs:
F 01 No start (after 2 attempts to start)
F 02 Flame failure
F 03 Under-voltage or over-voltage
F 04 Premature flame recognition
F05 N/A
F 06 Coolant temperature sensor interrupt or temperature sensor short-circuit
F 07 Metering pump interrupt or metering pump short-circuit
F 08 Blower motor interrupt or blower motor short-circuit or blower motor incorrect speed
F 09 Glow plug interrupt or igniter short-circuit
F10 Overheating
F 11 Circulating pump interrupt or circulating pump short-circuit
F 12 Battery main switch short circuit
F 13 Output vehicle fan short circuit
F 14 Overheating protection defective
F 15 Reference resistance not reached during start
F 16 Exhaust gas temperature too high
F 17 Exhaust temperature sensor defective