Luftheizgeräte HL 90
HL 90 air heaters
Appareils de chauffage à air chaud HL 90
Riscaldatori ad aria HL 90
Luchtverwarmingsunits HL 90
Ilmalämmitin HL 90
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Operating and servicing manual
HL 90
General information
Dear Webasto Customer!
We assume that the workshop / service centre that carried out the installation
explained to you the operation and principle of functioning of your new heater
to your complete satisfaction. With these operating instructions we would like
to provide you with an overview of the use of the HL 90 heater.
Maintenance and safety instructions
Within the territory governed by European Directive 70/156/EEC and/or EC/
2007/46 (for new vehicle types from 29/04/2009), there are homologation
approvals for the HL 90 heaters in accordance with the ECE-R 122 (Heating)
and ECE-R 10 (EMC).
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The unit must be installed as set out in the supplied installation manual.
The year in which the heater is used for the first time must be permanently re-
corded on the heater’s rating plate by deleting the inapplicable year figures.
Check the openings of the combustion air inlet lines and exhaust pipe opening
and clean them if they are dirty.
Switch off the auxiliary heater before refuelling.
The air heater’s heat exchanger can be used for a maximum of 10 years and
must then be replaced by the manufacturer or one of its authorised workshops
using a genuine spare part. A label must then be affixed to the heater showing
the date of sale of the heat exchanger and the wording “Genuine spare part”. If
exhaust pipes pass through compartments used by people, the pipes must also
be replaced by genuine spare parts after 10 years.
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The heater must not be operated:
In filling stations and tank farms.
In places where explosive vapours or dust may
build up (e.g. near fuel, coal, wood dust or cereal
stores).
Close to inflammable materials such as: Dry
grass and leaves, cardboard packaging, paper,
etc.
In enclosed rooms (e.g. garages), not even via
t
he timer or Telestart.
For heating compartments in which hazardous
goods are transported.
Without an additional shield over the heat ex-
changer to prevent people or flammable materials touching the surface of the heater inadvertently.
Danger of fire, explosion and
suffocation
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The heater must not:
be exposed to temperatures of more than 85 °C
(storage temperature), otherwise the electronics
may suffer permanent damage.
be blocked by articles of clothing, textiles or sim-
ilar material at the heating air inlet.
cleaned with a power washer.
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The heater must:
be operated with the fuel specified on the rating
plate and at the nominal voltage specified on the
rating plate.
be switched off if considerable quantities of
smoke are generated, in case of unusual combustion noises or if you smell fuel. Switch it off by
removing the fuse. The heater must not be restarted until the unit has been checked by personnel duly trained by Webasto.
be checked by a specialist at the latest at the star
t
of the heating period.
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Liability:
Failure to follow the installation instructions and
the notes contained therein will lead to all liability
being refused by Webasto. The same applies if
repairs are carried out incorrectly or with the use
of parts other than genuine spare parts. This
invalidates the type approval for the heater and
its homologation / ECE type permit.
Liability claims can only be lodged if the claimant
c
an prove that he has complied with the servicing
and safety instructions.
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Standard clock
Button for
immediate
heating
1st programmed
time button
Backwards button Display panel Forwards button
Switch-on indicator
(operating indicator)
Time button
2nd programmed time button
Ready indicator
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Operation of the heater
The air heater can be started using a switch, a mechanical cabin thermostat or
a digital timer, according to its equipment.
General
The time when heating starts can be programmed using the digital timer within
a time range from 1 minute to 23 hours 59 minutes.
The on-time can be 59 or 29 minutes starting from the programmed time or after
“immediate heating” is pressed.
Continuous operation is also possible after pressing the “immediate heating”
button, if the unit is connected accordingly.
Operation
The heater switches off automatically after a short run-on time when the ignition
is switched off.
Switching on
Manual: Press the immediate heating button .
Automatic: By programming the start of heating.
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Switching off
Press the immediate heating button .
Setting the time/day
Press the Time button at the same time as the Forwards button or
Backwards button .
Checking the time
With the ignition off: Press the Time button .
Programming the start of heating
Press the 1st programmed time button at the same time as the Forwards
button or Backwards button until the required time appears on the display panel.
Code number 1 remains on display, the Ready indicator lights up.
The 2nd programmed time button can be used for programming another
time. The procedure is the same as for programming the 1st programmed time.
Pressing the 1st programmed time button or 2nd programmed time button
activates this setting and deactivates the other. The set times are retained.
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Checking programmed times
Press the 1st programmed time button or 2nd programmed time button
briefly.
The display panel shows the programmed time and the code number.
Deleting programmed times
Press the 1st programmed time button or 2nd programmed time button
briefly.
The programmed time and the code number disappear from the display panel.
Operation with a switch
For heating with a switch, it is possible to select between full load or part load.
Control can be effected by incorporating a thermostat.
Switch
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Operation with a cabin thermostat
With the cabin thermostat (mechanical), it is possible to select between full
load/part load or part load/off operating modes.
• Full load/part load operating mode
The heater switches over to part load operation when the temperature set on
the cabin thermostat is reached (upper switching point of the cabin thermostat).
The heater is switched back to full-load if the temperature drops to the lower
switching point of the cabin thermostat.
• Part load/off operating mode
The heater is switched off when the temperature set on the cabin thermostat is
reached (upper switching point).
The switch-on indicator remains lit.
Cabin thermostat
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Troubleshooting
In the event of a malfunction, fuses and electrical connections should be
checked for condition and security.
If the measures described below do not rectify the malfunction then the heater
must be checked by personnel duly trained by Webasto.
Return pin on
temperature limiter
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Heater switches off automatically (= fault lock-out)
Cause Remedy
No combustion after start Switch heater off and then on again
Flame extinguishes during operation Switch heater off and then on again
Heater overheats Check that the heating air flow is clear
Reset temperature limiter
Switch heater off and then on again
Electrical system voltage too low Charge battery
Switch heater off and then on again
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Heater produces black smoke
Cause Remedy
Combustion air and/or exhaust
system blocked
Check that the combustion air and
exhaust systems are clear
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D
Bei mehrsprachiger Ausführung ist Deutsch verbindlich.
Die Telefonnummer des jeweiligen Landes entnehmen Sie bitte dem Webasto Servicestellenfaltblatt
oder der Webseite Ihrer jeweiligen Webasto-Landesvertretung.
In multilingual versions the German language is binding.
The telephone number of each country can be found in the Webasto service center leaflet or the
website of the respective Webasto representative of your country.
Dans le cas d'une version rédigée en plusieurs langues, l'allemand est alors la langue qui fait foi.
Pour trouver le numéro de téléphone du pays concerné, veuillez consulter le dépliant des pointsservice Webasto ou la page web de la représentation Webasto de votre pays.
Nel caso di una versione plurilingue il tedesco è vincolante.
I numeri di telefono dei diversi Paesi sono riportati sul pieghevole relativo ai centri di assistenza
Webasto oppure sul sito Internet del proprio rappresentante di riferimento Webasto.
Bij een meertalige versie is de Duitse versie bindend.
Het telefoonnummer van het betreffende land kunt u vinden op
het Webasto Servicepuntenoverzicht of de website van de Webastovestiging in uw land.
Useampikielisten versioiden yhteydessä saksankielinen on sitova.
Kunkin maan puhelinnumero löytyy Webasto huoltopiste-esitteestä tai kyseisen maan Webastoedustajan internetsivuilta.
Ident-Nr. 9012034B • 05/13 • Errors and omissions excepted • Printed in Germany
© Webasto Thermo & Comfort SE, 2013
Webasto Thermo & Comfort SE
Postfach 1410
82199 Gilching
Germany
Visitors' address:
Friedrichshafener Str. 9
82205 Gilching
Germany
Internet: www.webasto.com
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