Webasto Air Top Evo 3900 Workshop Manual

Webasto Air Top Evo 3900

69 pages

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Luft-Heizgeräte

Air heaters

03/2003

Workshop Manual

Air Top Evo 3900

Air Top Evo 5500

Type Air Top Evo 3900/5500 B

(Petrol)

Type Air Top Evo 3900/5500 D

(Diesel/PME)

Visit www.butlertechnik.com for more technical information & downloads.

www.butlertechnik.com

Table of Contents

Other manuals for Webasto Air Top Evo 3900

Operating Instructions10 pages

Installation Manual40 pages

Questions and Answers:

M
Melissa NguyenAug 22, 2025
How to unlock Webasto Heater after F 12 error?
- S
  Shawn TaylorAug 22, 2025
  The F 12 error on your Webasto Heater indicates a heater unit lock-out. This is activated when a permanent heater fault lock-out has occurred. To resolve this, switch on the heater unit and confirm that fault code F12 is displayed. Remove the fuse, then switch off the heater unit using the heater control. After waiting more than 2 seconds, reinsert the fuse, and switch the heater unit back on using the heater control.
M
Mark AguilarSep 1, 2025
What to do if my Webasto Air Top Evo 3900 shows error F 12 - Heater unit lock-out?
- J
  Jeffrey HarveySep 1, 2025
  If your Webasto Heater displays error F 12, indicating a heater unit lock-out, remove the fuse, switch off the heater unit with the heater control, insert the fuse again after more than 2 seconds, and then switch on the heater unit again with the heater control.
T
Thomas MitchellAug 31, 2025
What to do if my Webasto Air Top Evo 3900 Heater shows error F 00 - Control unit error/ incorrect parameter set/ warm-start detection?
- R
  Rachel HernandezAug 31, 2025
  If your Webasto Heater displays error F 00, indicating a control unit error, incorrect parameter set, or warm-start detection, replace the control unit.
A
antonioriveraAug 30, 2025
What to do if my Webasto Air Top Evo 3900 shows error F 06 - External temperature sensor break or External temperature sensor short circuit?
- W
  William ReynoldsAug 30, 2025
  If your Webasto Heater shows error code F 06, indicating an external temperature sensor break or short circuit, check the cables and replace the temperature sensor. Also, check the cables and terminating resistor and replace the temperature sensor, if needed.
M
Madison WhiteheadAug 28, 2025
What to do if my Webasto Air Top Evo 3900 shows error F 08 - Fan motor interrupt or fan motor short-circuit or fan motor overload or fan motor blocked?
- A
  alan27Aug 28, 2025
  If your Webasto Heater displays error F 08, which indicates a fan motor issue (interrupt, short-circuit, overload, or blockage), replace the drive unit (combustion and hot air blower). Additionally, eliminate the cause of any blockage or difficulty in movement.
J
Jeffrey LeeAug 27, 2025
What to do if my Webasto Air Top Evo 3900 shows error F 10 - Overheating?
- C
  christopher58Aug 27, 2025
  If your Webasto Heater displays error F 10, it indicates overheating. The overheating fault lock-out has tripped because the heater overheated. You need to find and remove the cause of the overheating.
A
Amanda McclureAug 26, 2025
What to do if my Webasto Heater shows error F 02 - Flame abort (repeated >3)?
- P
  patricia00Aug 27, 2025
  If your Webasto Heater shows error code F 02, which means flame abort is repeated more than 3 times, you should check the fuel supply to ensure the tank isn't empty and the fuel lines aren't blocked. You may also need to clean the burner insert and replace the flame sensor.
C
Carol GarciaAug 25, 2025
What to do if my Webasto Heater shows error F 01 - No start (after 2 starting attempts)/ no flame formation?
- R
  rreedAug 26, 2025
  If your Webasto Heater displays error code F 01, indicating no start or flame formation, you should check the fuel supply, ensuring the tank is not empty and the lines are not blocked. Additionally, clean the burner insert and replace the flame sensor.
C
Christopher ParkerAug 25, 2025
Why does my Webasto Air Top Evo 3900 unit emit black smoke?
- C
  chowellAug 25, 2025
  If your Webasto Heater unit emits black smoke, it's likely that the combustion air and/or exhaust system is blocked. Check that the combustion air and exhaust systems are clear.

Webasto Air Top Evo 3900 Specifications

General

Fuel Type	Diesel
Rated Voltage (V)	12 / 24
Type	Air
Heat Output (kW)	3.9 kW
Heat Output (Btu/h)	13, 300 Btu/h
Air Volume (CFM)	141 CFM
Weight (kg)	3.5 kg
Weight (lbs)	7.7 lbs
Control	Digital

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