20034064
30
Faults - Possible causes - Solutions
Find a list of faults, causes and possible solutions for a set of failures that may occur and result in irregular burner operation or no
functioning at all.
If a burner malfunction is detected, first of all:
• check that the electrical wiring is adequately connected;
• check whether fuel is delivered;
• check that every adjustment parameter is adequately set.
8 Faults - Possible causes - Solutions
LIGHT OIL OPERATION
SYMBOL
(1)
FAULT PROBABLE CAUSE SUGGESTED REMEDY
The burner does not start A limit or safety control device is open Adjust or replace
Control box lock-out Reset
Fan motor blocked Reset thermal cut-out
Oil pressure switch intervenes
Adjust pressure switch or eliminate
overpressure
No electrical power supply
Close all switches - Check connec-
tions
No light oil Check the light oil supply circuit
Control box fuse blown Replace
Pump is jammed Replace
Defective motor command control device Replace
Defective control box Replace
Defective electrical motor Replace
The pilot burner does not work Check
Defective safety solenoid valve Replace
Defective oil modulator Recondition or replace
The burner does not start and
a function lock-out occurs
Flame simulation Replace control box
Photocell short-circuit Replace photocell
2-phase power supply thermal relay trips
Reset thermal cut-out when third
phase is re-connected
The burner starts but stops at
maximum air damper setting
Contact 1 of servomotor does not operate control
box terminals 9-8
Adjust cam I or replace servo-mo-
tor
The burner starts and then
goes into lock-out
Air pressure switch adjusted badly Adjust
Pressure switch pressure point pipe blocked Clean
The burner starts and then
goes into lock-out
Fault in flame detection circuit Replace control box
The burner remains in pre-
purging phase
Contact III of servomotor does not operate con-
trol box terminals 10-8
Adjust cam III or replace servo-
motor
To Next Page
Loading...
