Hi Sandy If you look at my profile, you will find a few informations about me and my boat - you should try to publish a few informations about yourselt too! It will be easier to respond to your questions if you tell us the name and model of your heater. I can also recommend the search function on this site: Choose Advanced search>All Forums>Any Date ,,,,,,,, and search e.g. "Webasto" The manual is available on the net, or ask me, and I'll send one.
In my boat I have a Webasto 5000 and the search starts with checking the 20A fuse located near the battery. In my boat it is located in the battery compartment. It is not marked. You ought to know, the Webasto is powered directly from the battery, and it is not turned off when you cut the main curcuits. This is because the heater needs current in the cooling down period, when the blower is running. If you have power (green light) on the heater control knob, then you check the F-codes. As you see below, the fuel line needs to be free of air, so if you ran out of fuel, the heater will not start.
FROM THE MANUAL:
Initial Operation After the heater has been installed, the fuel supply system is to be bled thoroughly. NOTE: Owing to the low fuel consumption it is required that the heater be turned on repeatedly to fill the fuel line leading to the heater. During a test run of the heater all connections are to be checked for leakage and security. Should a malfunction of the heater occur during operation, fault isolating measures are to be performed. Shut-Down on Faults Faults related to individual heater components and malfunctions during the start-up sequence are detected in the control unit. The heater is shut down (fault lock-out) in the following cases: - no or unsuccessful start-up - temperature sensor defective - temperature limiter (interruption or short-circuit) - glow plug defective - insufficient fan speed, short circuit or interruption - fault in the metering pump circuit or overheat protection circuit (during start-up phase only) - undervoltage of less than 10 volts or overvoltage of more than 15 volts and for longer than 20 seconds (aplies to 12-volt heaters) - undervoltage of less than 20 volts or overvoltage of more than 32 volts and for longer than 20 seconds (on 24-volt heaters) - control unit defective - overheating Fuel supply will be interrupted in the event of overheating. An after-run cycle is performed as is the case when the heater is shut down manually. After the after-run cycle has been terminated, the control unit is in the fault lock-out state. An overheating condition is indicated by 10 flashing light signals of the operation indicator. Eliminate cause of malfunction. To deactivate the fault lock-out, the heater is to be briefly (min. 2 seconds) turned off and then switched back on again one time. Fault Code Display If the heater is equipped with a combination or standard digital timer, a fault code is indicated on the display of the digital timer whenever a malfunction has occurred: (The code may be shown as a blinking light, e.g 4 blinks = F04).
F 00 Control unit failure / incorrect parameter set / warm start detection F 01 No start-up (after 2 start-up attempts) no formation of flames F 02 Flame extinguished (repeated >5) F 03 Undervoltage or overvoltage F 04 Premature flame detection F 06 Temperature sensor interruption or temperature sensor short-circuit F 07 Metering pump interruption or metering pump short-circuit F 08 Fan motor interruption or fan motor short-circuit or fan motor incorrect speed F 09 Pencil-type glow plug interruption or pencil-type glow plug short-circuit F 10 Overheating F 11 Temperature limiter interruption or temperature limiter short-circuit F 12 Setpoint transmitter (interruption / short-circuit)
P.S. Search in 341/342 " White smoke from heater exhaust"
------------- Freya H400 #27 (2006), 40HP 3JH4E, 2-cabin, 3-blade Flexofold, Aries LiftUp Windvane, Exturn 300, Jefa DD1,Simrad NX40,Icom M603(VHF)+M802(SSB)
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