AR BLUE CLEAN 7830 - 7850 - 7870
USE AND MAINTENANCE HANDBOOK page 18
INSUFFICIENT OR
IRREGULAR PRESSURE
The detergent valve is open
and takes in air
Insufficient water supply
The pump intakes air
Worn out valve
Worn out/not suitable nozzle
Worn out gaskets
Exceeding water
temperature
Encrusted coil
Check
Check the capacity
Check
Replace
Replace
Replace
Check
Scale
THE BURNER DOES NOT
TURN ON
Excessive air intake
Dirty fuel filter
Dirty fuel pump filter
Dirty burner nozzle
Faulty thermostat
Broken/blocked electrovalve
Insufficient electrodes spark
Defected flowmeter and/or
pressure switch
Worn out motor pump joint
Absent/insufficient voltage
Check
Replace
Clean or replace
Replace
Replace
Replace
Replace
Replace
Replace
Check
Air intake
Worn out/dirty/blocked
valves
Exceeding water
temperature
WATER PRESENCE IN
THE OIL
Worn out water/oil rings
High percentage of humidity
in the air
OIL LEAKAGE FROM THE
HEAD
Worn out O-rings of the seal
system
MOTOR DOES NOT
START WHEN PRESSING
THE SWITCH
The plug is not working due
to overheating
Check the plug, the cable
and the ON/OFF switch
The thermal protection is not
working due to overheating
Make sure that the tension
is suitable
22. DECLARATION OF CONFORMITY