PAGE# 4
Operation Flowchart
MODEL:
KBE5S, KBE5L(2-step)
Remedy
No.
Possible Cause
YES
NO
●
Nozzle is clogged
49
●
Fuel pump is clogged or defective
50
YES
NO
●
Change-over switch connector is loose connection
51
●
Change-over switch is defective
52
NO
YES
YES
NO
●
Fuel viscosity is increasing
53
Black
White
●
Fuel viscosity is increasing
54
●
Nozzle is clogged
55
YES
NO
gives off black
●
Combustion air is insufficient
56
smoke
●
57
Oxygen for combustion is low because of high
altitude
Combustion is stable
Smoke comes out
Smoke is continuous
Which color is the smoke?
Heater is using in high altitude
Combustion level can switch into High/Low
(for KBE5L 2-step only)
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