22
7. Remove the gas injectors from the burner tube.
NOTICE For the TR125-2 and the TR150-2, replace the
Ø3,5 mm injector in the upper position.
8. Select the correct injectors (see §3.2).
NOTICE The injectors have a stamp that corresponds
to the diameter of the injector. For example, 130 means
1.30mm and 210 means 2.10mm.
9. Apply the sealing paste from the conversion kit on
the threads of the injectors.
CAUTION! Avoid paste from getting into the injectors.
10. Insert the new gas injectors.
11. Reattach the burner tube to the burner unit.
12. Mount the burner unit back into the air heater and
reconnect all cables.
13. Expel air from the piping and check the gas valve
and supply line for leaks.
14. Change the labels on the air heater with ones that
have the correct values for the new gas type.
15. Attach an Attention sticker that notifies users that
the air heater has been converted to another gas
type.
16. Set the burner pressures (see §8.1).
9 Troubleshooting
If the air heater malfunctions, first check if the problem is
caused by external circumstances (e.g. no supply power).
If the problem is not caused by external circumstances,
use the tables and instructions in this chapter to fix the air
heater.
NOTICE Please remember the built in waiting times of
the air heater; the signals of the LED’s and the code on the
display. Do not react too soon.
9.1 Volatile lock outs
The table below describes the volatile lock outs that can
occur. These can only be reset by hand.
Display Error type Description Case #
L-0 Internal error Internal error 13
L-1 Ignition error Flame lasts only 5 seconds
after ignition
1
No flame after ignition 2
L-2 and 3 Internal error Internal error 13
L-4 E-error E-error for more than 24
hours
12
L-8 to 12 Internal error Internal error 13
L-13 Pressure switch error Pressure switch is closed
in stand-by mode
14
L-14 Pressure switch error Pressure switch does not
close during pre-purge
11
L-15 Overheating Heat exchange sensor is
overheated
3
L-17 to 19 Internal error Internal error 13
Display Error type Description Case #
L-20 Flame error Flame detected after
closing the gas valve
15
L-21 Flame error Flame detected before
opening the gas valve
16
L-22 Flame error Flame failure during
burning
5
L-25 Sensor error Heat exchange sensor
failure
4
L-27 to 31 Internal error Internal error 13
L-32 Sensor error Heat exchange sensor
failure
4
L-33 to 38 Internal error Internal error 13
L-43 Overheating Heat exchange sensor is
overheated too often
3
9.2 Temporary errors
The table below describes the temporary errors that can
occur. These will disappear automatically after the cause
has been resolved.
Display Error type Description Case #
E-00 to 04 Internal error Internal error 13
E-05 Overheating Heat exchange sensor is
overheated
3
E-06 to 13 Internal error Internal error
Flame detected when there
shouldn’t be one
13
E-14 Flame error 16
E-15 to 20 Internal error Internal error 13
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