MAIN BOARD
Subject
Description
Part Function
Control every electronic and electromechanical component. Indicates overall
operation status of boiler as well as sensor data.
Impact in Case of
Faulty Operation
1- In general, PCB failure gives an error code on LCD screen and does not
fulfill heating necessity.
Primary Relevant
Error Codes
E01, E02, E08, E12, E21, F25
Troubleshooting and
Testing Method
Visual Inspection: Inspection of whether cable connections are proper and
without any damage, and checking any abnormality of components/circuits
on the circuit board (tarnishing, solder cracks/splits, etc.)
Maintenance Period
No special maintenance requirement.
GAS VALVE
Subject
Description
Part Function
1- Adjust the amount of gas required for burning and transmits it
to venturi.
Impact in Case of Faulty
Operation
1- Boiler does not burn.
2- Gas regulation is improper.
Primary Relevant Error
Codes
E01,E02, E08, E12, E21, E82
Troubleshooting and Testing
Method
Visual Inspection and Testing:
1- Checking whether cable connections are proper and without
damage
2- Resistance check
3- Voltage Testing
Maintenance Requirement
It requires no special maintenance.
Maintenance Period
-
56
