Troubleshooting - Webasto Air Top 2000 ST Installation Instructions Manual

Marine Air Heaters
Air Top 2000 ST / Evo 40 / Evo 55
11

Troubleshooting

11.1 Error Code Output
-If an error occurs, the unit outputs a fault code via the control
element.
-You will find further information in the operating instructions and in
the heater workshop manual.
NOTE:
An error code is generated on the control element indicator light after
an error has occurred. When determining the generated code, there
will be a series of 5 fast flashes after which, the error code will be
generated by a sequence of long flash pulses, count only the long flash
pulses to obtain the code. Error codes are shown in the table below.
F00
Control unit error / incorrect parameter set / warm start recognition
F01
No start (after 2 attempts to start) / no flame formation
F02
Flame failure (repeated more than 3 times)
F03 Under voltage or over voltage
F04 Premature flame recognition
F06 Temperature sensor interrupt or short circuit
F07 Metering pump interrupt or pump short circuit
F08 Fan motor interrupt or short circuit or overload or blocked
F09 Ceramic glow pin interrupt or short circuit
F10 Overheating: Resulting in permanent heater fault lock-out
F11 Overheating sensor interrupt or short circuit
F12 Heater lock-out
Heater lock-out permanent
F13
Overheating sensor incorrect position
F14
Set point generator interrupt
F15
11.2 Fault Lock-Out
The control unit continuously monitors the heater operation. The control
unit identifies errors on individual heater components and faults during
operation. Should the control unit experience component errors and
operational faults, the heater may be shut down.
Troubleshooting
Causes:
The heater is shut down (fault lock-out) if:
– No or incorrect start
– Temperature sensor defective
– Overheating sensor interrupt or short circuit
– Overheating sensor installed incorrectly
– Ceramic glow pin interrupt or short circuit
– Fan motor overload or blocked or short circuit or interrupt
– Error in the fuel metering pump or circuit
– Under voltage or over voltage for longer than 20 seconds.
– Control unit defective
– Overheating
Effects:
The fuel supply is stopped if the heater overheats.
The heater continues to run in the same way as if it is switched off
manually.
After the heater stops the control unit may set in fault lock-out mode.
Heater Lock out Reset Procedure:
1. Using switch or standard timer control, turn heater on
2. Remove the main power connection to heater from battery or pull fuse
for a minimum of 20 seconds.
3. Using switch or standard timer control, turn the heater off.
4. Reinstall main heater power connection where previously disconnected.
Rectify the cause of the fault.
IMPORTANT: Heater fault codes can be read using PC Diagnostics,
however, the heater lockout reset must be manually performed using the
procedure stated above.
If you have any questions, contact our technical support team at (800)
860-7866 or via email at: info-us@webasto.com
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