Sharp R-1900J Service Manual page 22

R1900J
4. Exhaust thermistor check (SF-6)
You can check if the exhaust thermistor works correctly or not by using this function.
For example: In case the exhaust thermistor works correctly (275ml water load is necessary.), the display will show "OH" as follows.
Operation
plug in
(within 20 sec.)
POWER LEVEL
SET MEMORY
(within 20 sec.)
START
STOP/CLEAR
START
(after 5 min.)
STOP/CLEAR
STOP/CLEAR
For example: In case the exhaust thermistor works incorrectly (275ml water load is necessary), the display will show "no" as follows. In
that case, the exhaust thermistor should be checked or replaced.
Operation
plug in
(within 20 sec.)
POWER LEVEL
SET MEMORY
(within 20 sec.)
START
STOP/CLEAR
START
(after 5 min.)
STOP/CLEAR
STOP/CLEAR
Display
0
0
0
0
SF-
SF-6
6
5.00
(count down)
OH
SF-1
0
Display
0
0
0
0
SF-
SF-6
6
5.00
(count down)
no
SF-1
0
Indicator Sound
ON
or
or
Indicator Sound
ON
or
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