ermaf TR 75 - Page 16

GB-16
D
GB
F
NL
I
E
? Fault code A. and 9 flash alternately and the
light is red?
The main fan continues to operate after the de-
vice has been switched off.
! Wiring fault.
• Check the wiring to actuate the main fan, see
page4 (Wiring).
! The pressure switch does not switch.
• Check the air hose on the pressure switch for
dirt and moisture and clean it.
! The main fan is switched off but the pressure
switch signal does not drop.
• Check the pressure switch and replace it if nec-
essary.
! The relay to actuate the main fan is defective.
• Replace the relay.
? Fault code C. and 1 flash alternately and the
light is red after 5 minutes?
Signal from safety temperature monitor(STM).
! Temperature has been exceeded.
• Leave heater to cool down for longer.
! The main fan does not switch on.
• Check the main fan.
! Wiring fault.
• Check the wiring to actuate the main fan, see
page4 (Wiring).
! The safety temperature monitor (STM) is incor-
rectly aligned.
• Check the position of the safety temperature
monitor(STM).
! Ambient temperature exceeded.
• The temperature is >40°C. Allow the room to
cool.
! The safety temperature monitor (STM) is measur-
ing an incorrect temperature.
• Replace the safety temperature monitor.
! The heater is badly soiled.
• The heater must be cleaned urgently.
! Installation position.
• The heater is too close to other heaters, see
page2 (Installation).
! Incorrect CO
2
value.
• The heater is not set correctly and must be ad-
justed, see page9 (Adjusting the heater).
? Fault code C. and 2 flash alternately?
Signal from safety temperature limiter(STL).
! Temperature has been exceeded.
In the event of a power failure during operation,
the heater will be switched off without a cool-
ing phase. In the event of a brief power failure
(<5minutes), the heat exchanger will heat the
device excessively and the STL will issue a signal.
• In this case, Controlled air flow mode is activated.
If the heater has been successfully cooled within
1minute, it will restart.
? Fault code C. and 2 flash alternately and the
light is red?
Signal from safety temperature limiter(STL).
! The cause of the fault as described above for
warningC.1 could not be rectified.
• Check the heater for damage, see page19
(Visual inspection).
? Fault code C. and 3 flash alternately and the
light is red?
Temperature limiter (TL) has tripped.
! Wiring fault.
• Check contact at plug X16.
? Fault code C. and 4 flash alternately?
Capacity reduction function active. The capacity
reduction function is activated 10°C below the
trip temperature of the safety temperature moni-
tor(STM).
! The main fan does not switch on.
• Check the main fan.
! Wiring fault.
• Check the wiring to actuate the main fan, see
page4 (Wiring).
! Ambient temperature exceeded. The temperature
is >40°C.
• Allow the room to cool.
! The heater is badly soiled.
• The heater must be cleaned urgently.
! Installation position.