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Webasto Air Top 32 - User Manual

Webasto Air Top 32
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,--
Jebasto
Feel
the
drive
Air
Heater
Air
Top 24/32
Gasoline/Diesel
HL 24/32 B
Gasoline
HL 24/32 D
Diesel
Workshop
Manual
www.butlertechnik.com
www.butlertechnik.com

Questions and Answers

  • S
    Sergio ClarkeAug 8, 2025
    What to do if my Webasto Air Top 32 shuts down due to faults during heating operation?
    • A
      Anthony SnyderAug 8, 2025
      If your Webasto heater shuts down during operation, it could be due to several factors. Check the metering pump for proper functioning. Also, verify the ambient temperature to ensure the motor isn't overheating, and inspect the safety switch.
  • A
    Adam RyanAug 18, 2025
    How to fix Webasto Air Top 32 if it shuts down in 'fault lock out' mode?
    • K
      Kevin MooreAug 18, 2025
      If your Webasto heater is in 'fault lock out' mode, try the following: switch on the heater, charge the battery, check and replace fuse F2 if necessary, check electric leads for earth connection and short circuit, replace fuse F1 if necessary, check electric leads and connections for the glow plug, check electric leads for interruptions, check the flame detector and electric leads for earth connection and short circuit, check the safety thermostat and safety switch, and check the metering pump for proper functioning.
  • H
    Hunter FryeAug 29, 2025
    Why does my Webasto Air Top 32 give off too little heat?
    • C
      Cheryl PriceAug 29, 2025
      If your Webasto heater isn't providing enough heat, there could be several reasons. A wiring fault could be the cause, so you should check the exhaust silencer and exhaust pipe. You might also need to check the delivery rate of the metering pump, adjust the CO value (check installation location or speed), clean the heat exchanger, replace the matting, check the drive unit, voltage, and combustion air and fuel quantities.

Summary

Technical Data

Technical Data of the Heaters

Table detailing technical specifications for different heater models, including heat output and fuel consumption.

Putting into Service

Bleeding the Fuel Supply System

Procedure for removing air from the fuel supply system to ensure proper operation.

Checking Proper Combustion

Instructions for measuring and adjusting CO2 content for optimal combustion after installation or repair.

Troubleshooting (Quick Diagnosis)

Fault Diagnosis Table

Table linking specific fault conditions to potential causes and checks for troubleshooting heater malfunctions.

Troubleshooting Flowcharts

Step-by-step diagnostic guides to resolve heater issues based on operational symptoms like shutdown or low heat.

Functional Description

Sequence of Functions

Describes the operational steps and states of the heater control units during start-up, operation, and shutdown.

Fault Lock-Out

Explains system shutdown procedures in case of detected faults like no flame, overheating, or safety switch activation.

Components

Components of the Heater

Details the individual parts that make up the heater unit, such as motor, fans, glow plug, and heat exchanger.

Fuel System

Covers all components related to fuel delivery and management, including metering pump, filters, and pickup.

Electrical Parts

Details various electrical components and their functions, including control units, resistors, relays, and wiring harnesses.

Notes on Repair and Disassembly

Maintenance of the Heater

Wiring Diagrams

Webasto Air Top 32 Specifications

General IconGeneral
TypeAir Heater
Fuel TypeDiesel
Air Volume (m3/h)120
Operating Voltage (V)12 / 24
Heat Output (Btu/h)10920

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