Panasonic UF-890 Service Manual page 189

Fuser Error Detection
( C)
215
210
200
190
180
Fan rotates high speed
172
70
25
14
Approx. 30sec
E26 will be logged.
(Thermal Fuse will open.)
E24 will be logged if Thermistor detects 210 C
for more than 3 sec. (Thermostat will open.)
OFF
193
185
ON
E24 will be logged if
Thermistor detects less
than 170 C for 3 sec during
the print process.
E22 will be logged when
temperature does not rise.
E25 will be logged when
temperature does not go up
at low temperature
environment.
Time
189
E23 will be logged if Thermistor
detects 197 C or higher for 5 min.
after Fuser Lamp is turned Off.
Fan speed rotates slower if Thermistor detects
less than 150 C for 60 sec, after Fuser Lamp is
turned Off.
Fan stops if Thermistor detects less than
70 C for 225 sec after Fuser Lamp is
turned Off.