Webasto Coolant General Operations Manual page 10

Circulation
F09
pump defec-
2
tive
or
9* Glow plug de-
fective
Temperature
limiter defec-
F10 or
tive/overheat-
10* 2
ing
Overheating
Igniter box
2
F11
defective
or
Circulation
pump defec-
11*
tive
F12
or
Heater lock-
2
out
12*
Operation of
F13
vehicle fan
defective
or
Vehicle fan
13*
short circuit
F14
Overheat sen-
or sor short cir-
cuit
14*
Glow or
F15
ignition ele-
or
ment circuit
15*
defective
F16
Exhaust gas
or temperature
high
16*
Exhaust gas
F17
temperature
or sensor open
or short cir-
17*
cuit
* - Indicator lamp of control element flashing: number of long flashes after 5 rapid flashes
** - Were applicable
1 - Thermo Pro 50 ECO
2 - Thermo 230/300/350
• Defective pump or wiring
• Defective glow plug or wiring
• Temperature limiter defective
2
• Heater overheating
• Overheat protection defective
• Defective igniter box/elec-
2
trodes
• Pump wiring
• Defective pump
• Repeated malfunction or
2
flame-out
• Main battery switch defective
• Wiring
• Vehicle fan relay defective
• Wiring
• Overheating protection sen-
sor defective
• Wiring
• Glow plug defective
• Exhaust gas temperature sen-
sor defective
• Heater fouled
• Wiring
• Exhaust gas temperature sen-
sor defective
2
• Check pump operation and wiring
• Check glow plug operation and wiring
• Replace temperature limiter
• Check coolant level/bleed coolant
• Check coolant pump operation
• Check temperature protection wiring
• Check operation of overheat protec-
tion, replace as necessary
• Replace igniter box/electrodes
• Repair wiring
• Replace pump
• Repair cause of malfunction
• Check wiring for damage
• Check battery disconnector
• Check wiring for damage
• Check vehicle fan relay operation
• Check wiring for damage
• Check overheat protection for proper
operation
• Check wiring for damage
• Check operation of glow plug
• Check wiring
• Check operation of exhaust gas tem-
perature sensor
• Check burner and heat exchanger for
fouling
• Check wiring for damage
• Check operation of exhaust gas tem-
perature sensor, replace if necessary
Thermo 230/300/
350
Thermo 50
Thermo Pro 50 ECO
Thermo 90 ST
Thermo Pro 90
Thermo 230/300/
350
Thermo 50
Thermo Pro 50 ECO
Thermo 90 ST
Thermo Pro 90
Thermo 230/300/
350
Thermo 50
Thermo Pro 50 ECO
Thermo 90 ST
Thermo Pro 90
Thermo 230/300/
2
350
Thermo Pro 50 ECO
Thermo Pro 90
Thermo Pro 50 ECO
Thermo Pro 90
Thermo Pro 50 ECO
Thermo Pro 90
Thermo Pro 50 ECO
Thermo Pro 90
Thermo Pro 50 ECO
Thermo Pro 90
Thermo Pro 50 ECO
Thermo Pro 90