Centrometal Cm Pelet-set Touch 14 Technical Manual page 83

E17 SENSOR 2. CIRCUIT
CORRECTOR
E18
2. CIRCUIT
E19 PHOTOCELL ERROR
SAFETY THERMOSTAT
E20
OR DOOR
MICROSWITCH
DEFECT
E21 RECIRCULATION
SENSOR
Technical manual - THE DIGITAL BOILER CONTROLLER Cm-Pelet set_Touch 14-90 kW
Possible cause: Termination in cables between the 2nd
heating circuit and control sensor, control contacts, cold
connection or defective sensor.
Boiler status: The boiler operate normally, 2 circuit stop to
operate,switch off the pump.
Troubleshooting: Call an authorized service person to check
the location of the sensor, check for sensor / cable damage,
check connections at the connectors, check the ohmic
resistance of the sensor.
Possible cause: Termination in the cables between the 2
heating circuit connector and control unit. Control unit
contacts, cold connection or defective corrector.
Boiler status: The boiler operate normally, the 2nd heating
circuit continues to operate as if the converter is off.
Troubleshooting: Call a qualified service person to check the
location of the corrector, check for damage / correctness and
cable , check the connection of the the connectors.
Possible cause: Interruption in cables between the photocell
and control, control contacts, cold or faulty photocell.
Boiler status: Departure in phase of shutdown S7 (S7-1).
Troubleshooting: Contact an authorized service person to
check the damage / correctness of the photocell and the cable ,
check the connections on the connectors.
Possible cause: Too high boiler water temperature (above 101
° C) or open lower boiler door, poorly positioned
microprocessor at the bottom boiler door (not pressed enough
when the door is closed), defective microprocessor with lower
boiler door.
Boiler status: The pellet transporter and the burner fan
momentarily stop operating, ie the boiler is currently in the OFF
phase. The fan and the transporter lose power and do not even
run the manual test.
Troubleshooting: If the lower boiler doors are open they
should be closed, if they are closed, check the position of the
microprocessor (if it is pressed sufficiently) and its correctness.
If everything is checked with the microprocessor and the fault is
still active, check that it has released the safety thermostat.
Wait for the water temperature in the boiler to be below 70 ° C
and perform the procedure from "SAFETY
THERMOSTAT_Case of boiler operation".
Possible cause: Interruption in cables between sensors and
control, control contacts, cold connection or defective sensor.
Boiler status: boiler operate normally.
Troubleshooting: Call a qualified service person to check the
location of the sensor, check for sensor / cable damage, check
connectors on the connectors, check the ohmic resistance of
the sensor.
Errors
83