Result
Cause
Remedy
How to check
Phenomenon
6 Smell of fuel comes out.
Check air inlet opening of fan moter
Air inlet opening is unusual
Operate with appropriate air inlet opening
Check if the pipe is clogged
Fuel line is clogged
Flow rate is lower by clogged
Clean fuel line
Check if filter element is dirty ⇒ Figure7(P.19)
Filter element is dirty
Filter element is clogged
Replace filter element
Check looseness of each joints
The connection has become loose
Air is coming
Fasten joints more tightly
Nozzle is clogged
Flow rate is lower by clogged
Replace nozzle
Marking is incorrect
Incorrect nozzle.
Use correct nozzle
Check the fuel ⇒ Figure 8(P.19)
Use fuel except diesel and kerosene
Low quality fuel
Operate with appropriate fuel
Be mixed with water
Diesel and kerosenel goes bad
7 Smoke comes out.
Check air inlet opening of fan moter.
Air inlet opening is unusual.
Operate with appropriate air inlet opening
Fan is dusty.
Supplied air is reduced
Clean combustion fan
Less than standard
Operate with appropriate power source
Marking is incorrect.
Incorrect nozzle.
Use correct nozzle
An oxygen concentration is
low
Check the fuel ⇒ Figure 8(P.19)
Use fuel except diesel and kerosene
Low quality fuel
Operate with appropriate fuel
Be mixed with water
Diesel and kerosenel goes bad
8 Fuel leaks
Check looseness of each joints
The connection has become loose
Air is coming
Fasten joints more tightly
Be damaged and cracked
Failure of drain packing
Replace drain packing
9 Display「LV」
Less than AC 90V
Supplied voltage is low
Operate with appropriate power source
Low voltage detection.
（continue ignition）
Failure of burner controller
Replace burner controller
Extend combustion air inlet opening
standard : 3
Check the altitude where heater is used
It is being used at higher than the
altitude of 1000m(3000ft)
※When it does not correspond to the above content
The rotation number of
combustion fan is reduced
Check if the nozzle is clogged
Improper quantity of
combustion air
Check the dust of combustion fan
Check the power supply voltage
standard：AC 108～132V ⇒ Figure7 (P.19)
standard: 3.0 ⇒ Figure 13 (P.22)
Check the marking of the nozzle
Check the marking of the nozzle
mark: 0.40 G 80゜AJ （DELAVAN）
Check the condition of each part of drain packing
Check the power supply voltage
standard：AC 108～132V
standard: 3.0 ⇒ Figure 13 (P.22)
mark: 0.40 G 80゜AJ （DELAVAN）
Improper quantity of
combustion air
12
