IPS Controllers M820 - Factory Defaults; Resetting to Factory Defaults

8. Factory defaults
To return the controller to the factory defaults:
a. Place the controller in Standby Mode.
b. Turn o the controller by holding down the Mode buon.
c. Press and hold both the Set Level and pH Cal pushbuons,
and then press the Mode buon.
d. The pH display will show “Ld” and the soware version
number will display in the ORP window.
e. The controller will be returned to the factory default
funcons and be placed in the test mode.
f. Return the controller to full operaon by again turning
o the controller with the Mode buon. Then turn the
controller on again by pressing the Mode buon. Note:
Failure to complete this acon will leave the controller in
the test mode.
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