8. Wherever flammable vapors or dust may form, the heater must be switched off as a result of the risk of explosion. 9. The heat transfer unit on coolant heaters is exposed to very high thermal stress and must be replaced by a genuine Webasto spare part after a ten year life cycle.
Switching ON: When the switch is used, the operation indicator (toggle) lights up. Shortly thereafter, the heater begins operation and delivers heated coolant to the engine or heat exchanger. Switching OFF: When heating is no longer required, switch the toggle switch OFF. The indicator light A separate switch (optional) allows the user to choose between heating and ventilation mode.
IMPORTANT - The Red status indicators (heater "ON") and LCD screen backlight turn off after 30 seconds. A touch of any button or a turn of the rotary knob will re-activate these lights. If the "Webasto" button is used to re-activate these lights, an additional press of this button is necessary to turn the heater off.
Programming the 24 Hour Digital Timer with 3 Time Settings Time / Remaining Time Ventilation Mode Indicator * ventilation mode not available on BlueHeat Heater Operation Indicator Reverse Forward (viewing (viewing the time) the time) Symbol for Program Setting / Viewing Selection the Time Manual Operation...
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Programming the 24 Hour Digital Timer with 3 Time Settings Continued: Program Start of Heating. Press the button. Press the “Forward” or “Reverse” buttons within 10 seconds until the required time for starting heating operation is displayed. If a different program number is required, the button must be pressed within 10 seconds.
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MultiControl Element and Menu Structure NOTE: For more detailed information on the operation of the MultiControl control panel, refer to the operation guide located at www.techwebasto.com Menu name Menu symbol Activated time settings, altitude correction* Time Quick-start button with status display Control knob * - Optional Button...
“T” symbol. These error codes can be found in the operation manual for the MultiControl. Error Codes If error messages appear on the display, please contact Webasto technical support at 800-860-7866.
Fault Codes NOTE: Not all Webasto coolant heaters show fault codes. Fault Error Recommended Possible Cause Applicable Heaters Code Message Action • Check fuses • Fuses No error • Check control Thermo Pro 50 ECO • Electrical wiring Heater Lock- element •...
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Glow plug de- Thermo 90 ST fective Thermo Pro 90 Thermo 230/300/ • Replace temperature limiter Temperature • Check coolant level/bleed coolant • Temperature limiter defective limiter defec- Thermo 50 F10 or • Check coolant pump operation tive/overheat- • Heater overheating Thermo Pro 50 ECO •...
Replacement parts are covered for six (6) months or the remainder of the original warranty period, whichever is longer. The intent of the Webasto warranty is to protect the original end-user of the heater from defects and provide free repair and re- placement of defective parts in the manner provided herein.
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