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Pf shows a power failure hols the stop clear button and it should work again.As for your other problems I will more details such as a model number Gas or Electric dryer and example of the problem in detail
P1445: CHECK PF SENSOR HIGH VOLTAGE TO PCM
Continuous Memory Diagnostic Trouble Code (DTC) P1445 indicates that
Self-Test has detected a PF sensor circuit input above the maximum.
Possible causes:
PF shorted to VPWR.
PF open circuit.
PWR GND open circuit.
Damaged purge flow (PF) sensor.
Damaged PCM.
It blinks "PF" to indicate that the cycle is interrupted due to a power failure. Press Start to continue the cycle or press Stop/Cancel to clear the display then restart the cycle.
Unplug the dryer for at least 30 minutes to forcibly reset the control if the display does not clear out or if the dryer cannot be restarted. Indicate the complete and exact model number of the dryer for further and specific troubleshooting repair advice.
Abnormal load applied
to the paper feed roller
PF-related gear(s)
broken
Replace the PF-related
gear(s).
PF encoder disk
stained or scratched
Replace the PF encoder
disk.
PF encoder sensor
defective
Replace the PF sensor
PCB.
Paper feed motor
defective
Replace the paper feed
motor.
First try re-installing the PF-2 print drivers. If that doesn't work, then try a different ink cartridge. If you have printed more than 5000 discs in the printer, it just may need a good cleaning as the sensors would be full of dried ink.
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