Troubleshooting
Troubleshooting
IMPORTANT!!!
Always remove the plug before working on the machine!
Multi-function thermostat
The thermostat has several functions.
Display Possible cause Action
"Err OFF" Temperature of over
170° at the sensor
The burner does not switch off properly. Check thermostat,
thermocouple and klixon and renew if necessary
"Err 2" Sensor broken Check that the sensor plug (2-pole plug on back of
thermostat) is properly engaged and contacted.Follow the
sensor cable to the end.
"OIL" Fuel tank empty Refill EL heating oil
"FLA" Combustion defect 1) check fuel filter, clean if necessary
2) check ignition electrode and burner setting and adjust or
replace if necessary
3) check fuel pump and magnetic valve
4) Check the ignition transformer
"E 1" Memory error. Target
value can be set but
not saved
Replace thermostat at the next opportunity and send in for
repair. Target value must be reset each time the machine is
switched on.
"E 4"
"E 5"
Memory loss Replace thermostat and send in for repair
"888" not
displayed
when
machine is
switched
on
Defective display unit Replace thermostat and send in for repair
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