The PIC will not allow calib ration if the transducer is t oo far out of calibration . A new
transducer must be inst al led and recalibrated.
Transducer Re placement
Since the transducer s ar e m oun ted on Schrader-type fittings, there is no nee d to remove
refrigerant from the ve s s el. Disconnect the transd ucer wiring by pulling up on the locking tab
while pulling up on t he weather-tight c onnecting plug from t he end of the transdu cer.

Do not pull

on the transducer wir es

. Unscrew the transducer from the Schrader fitting. When installing a
new transducer, do no t use pipe sealer, wh ich can plug the sensor . Put the plug connect or back
on the sensor and snap into place. Check for refrigerant l eaks.
Make sure to use a backup wrench on the Schrader fitting whenever removing a
transducer.
WARNING !WARNING