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MH: warning lamp STL
MH Micro: warning lamp STL
NOTICE
Polarity: This light must be permanently lit green. Otherwise, connect with correct polarity.
Reverse polarity protection prevents the wrong polarity (reversal of polarity) in the DC power sup-
ply (reversal of negative and positive poles) or AC power supply (reversal of outer conductor and
neutral conductor) of a device and can thus minimise possible damage.
polarity (reversed polarity) and can thus minimise possible damage.
NOTICE
warning lamp: safety-temperature-limiter (STL)
If the lamp lights, the (STL) was triggered by a too high operating temperature.
•
Let the heating system cool down.
•
Push the reset (STL) button all the way in. (followed by a click sound)
•
The heating system is ready to start again.
In case the (STL) is triggered again, let the system be repaired by a SCHEER trained person.
control box warning lamp
NOTICE
warning lamp: burner
If the lamp lights, it was triggered by a malfunction of the burner.
•
Press and hold the burner suppressor button briefly for about 1 second, not longer than 2 seconds.
•
The warning lamp of the burner will turn off and the burner is reset.
If the burner should switch to malfunction twice, please have a repair carried out by your specialist company.
MH
Suppression button on the control unit
MH Micro Burner fault light with reset button (additional reset button on the control unit)
NOTICE
Repeatedly running the unit empty of fuel can cause damage to the unit!
If the heater is operated without fuel, damage (e.g. to the oil nozzle) may occur
NOTICE
Other mains modules and control boxes may only be used in consultation with the manufacturer SCHEER.
