Manual Valeo Thermo E plus (page 8 of 12) (English, German)

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Heater operation

The heater can be operated according to the installed equipment using the Valeo control

elements switch or pre-selection timer. All information about the Valeo pre-selection timer

SC Preheater can be found on the Valeo website.

In addition, control via the vehicle's own climate control is possible.

Before you switch on the heater set the vehicle's heating system to “Warm”.

During all active operating phases of the heater, all electric components, the operating

voltage and functional irregularities are monitored and recorded.

In the event of faults always first check the following:

Is the fuel supply ok?

Is a sufficient amount of fuel in the tank?

Are the fuses ok?

Are the electrical connections and cables in order?

Are the combustion- and exhaust air ways free of obstructions?

A malfunction causes the heater to terminate its operation by a fault shut-off and to go into

the fault lock-out mode to prevent the heater from an automatic combustion restart. At the

same time the operation indicator begins to flash with a specific code (see below).

The fault lock-out occurs:

low voltage during a defined period

if combustion was not established during start-up

if the flame extinguishes during operation

extrinsic light

if the control device itself has failed or peripheral components are defective

Malfunctions

Liability claims

Failure to follow the installation instructions and the notes contained therein will lead to all

liability being refused by Valeo. The same applies if repairs are carried out incorrectly or

with the use of parts other than genuine spare parts.

This will result in the expiry of the ECE type approval of the heater and thus the general

operating permit.

Liability claims can only be made if the claimant has verifiably considered all the servicing

and safety instructions.

Operating and

service instructions

Flash code

The kind of malfunction is indicated from the operating indication light through a flash code

or if the pre-selection timer is used in the display (operation display). The flash code is

immediately generated after detection of the malfunction and will be kept until the heater

is freed.

The flash code comprises of a burst (sequence) of 5 short flashes depicting the break and a

defined number of long pulses corresponding to the malfunction number, which are to be

counted. After that the cycle starts with 5 short flashes again and so on.

The meaning of the number of long pulses is shown in the table below.

Table: Flash codes

No. of

long pulses Description of malfunction

0 Control device defective

1 No start within the safety time

2 Flame interruption, restart failed

3 Low voltage / overvoltage

4 Extrinsic light before starting or within the purge cycle

5 Flame guard defective

6 Temperature sensor / overheat protection defective

7 Solenoid valve defective

8 Combustion air fan motor / nozzle block pre-heater defective

9 Circulating pump defective

10 Overheat protection has been triggered

11 Electronic ignition unit defective

12 Heater lock-out activated

Variants to reset the heater after a fault lock-out:

1. Switch off the heater and then turn it on again

2. Reset the control device, e.g. through disconnecting it from the power supply

3. „Off“ and „On” switching“ via the S-Bus diagnostic interface

4. Erase the data in the fault memory by means of the diagnostic tool.

Additional to the fault lock-out a heater lock-out occurs if safety related components are

affected. The fault code 12 will be displayed (see para. “Flash code“).

If a heater lock-out has occurred, the heater must be maintained and released by Valeo

trained personnel.

Thermo E+

120/200/320

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Valeo Thermo E plus Manual

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