Toyotomi Laser 300 Service Manual page 38

L A S E R H E A T I N G
Section 4
FAILURE CHECK1 RESULT
5
The Is window Yes.
overheat
curtain
protector
too close
is activated
to the
rear of unit?
Stops No.
operation
Is circula-
and
tion fan
indicates
cover
error code
dusty?
"E-12"
6
Stops Resistor is Yes.
operation below
and 200kΩ
No.
indicates after
error code preheating
"E-13"
7
Stops
operation
and
indicates
error code
"E-22"
S Y S T E M S
Trouble Shooting
CHECK2 RESULT CHECK3 RESULT
Does circu- Yes.
lation fan
operate
No.
properly?
CHECK4 RESULT CHECK5 RESULT CAUSE SOLUTION
Clean fan cover
Curtain or other obstruction covers
circulation air inlet
Keep curtain from unit
Obstacle covers circulating air outlet Remove obstacle
Main circuit board malfunction Check or replace main circuit board
Circulation fan motor malfunction Check and replace fan motor
Incorrect wiring Check and correct wiring
Main circuit board malfunction Check or replace main circuit board
Wiring failure Correct or replace wires
Bumer thermistor malfunction Check or replace burner thermistor
Fuel drain in bumer Check and clean fuel pipe
Check blower motor
Check fuel pump
Ignition failure occured three times Remove fuel in the burner
consecutively with E-2 error code Heater won't re-start by the power
Fuel may accumulate in the bumer switch. Unplug the heater
36
S E R V I C E M A N U A L