4.11. Contactor
Subject
Description
Function of Part
It ensures the continuity of the power circuit by transmitting the energy coming from
the Circuit Breaker output contacts of the device to the relays. It protects the device
and the installation by turning on the power circuit in fault situations where the
heating must be turned off.
Impact in Case of Malfunction
It may not ensure that the device is protected in an emergency, the heating circuit may
not be activated, it may cause mainboard damage, or cause the machine to give error
by providing incorrect feedback signal.
Main Associated Error Codes
E03, E04
Diagnostics and Test Method
1- Checking the cable connections
2- NO auxiliary contact control
3- Main contact conduction control
4- Coil resistance measurement
5- Visual inspection
Maintenance Requirement
There is no special maintenance requirement.
Test definition
Test Method
Cable Connection Control
Make sure that the cable connections are in accordance with the user manual and
that the cables are undamaged. Make sure that the cable connections, especially on
the main output contacts, are solid.
NO Auxiliary Contact Control
Turn off power supply of the device. Next, measure the resistance between contacts
no. 13 and 14. An open-circuit or a resistance value above 100k should be seen. Then
turn on the energy supply and put the device into heating mode. In this case, measure
the voltage between the contacts no. 13 and 14 and the neutral terminal and make
sure that you see a voltage between 210-240 VAC.
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