18
Error Indications and Remedy Guidelines
: Lit
: Off
Indication
Error code
A1
A6
Error item
RAM check
W
atch dog error (main stop)
Cause and remedy
Microcomputer malfunction
Microcomputer malfunction
Part name
Power supply control circuit board
Power supply control circuit board
Condition
—
—
Connector
—
—
T
erminal to check
—
—
Normal value
—
—
Indication
Error code
F0
F6
Error item
Locked blower fan
Dust sensor disconnection
Cause and remedy
Check the operation of the blower motor
.
Check that the connector P4 is inserted properly
.
Rub tissue paper near the dust sensor cover for approx. 20 seconds (the number of dust
pieces is counted every 10 seconds). Check if the sensor detects dust normally
.
Check that the connector on the dust sensor side is inserted properly
.
Check that the connector P7 is inserted properly
.
Part name
Blower motor
Dust sensor
Condition
Room temperature
—
Connector
P4
P7
T
erminal to check
Each terminal
—
Normal value
See “How to determine whether the DC motor has a malfunction”.
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