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Operating Switch
PHP Water Heater Control Switch Operation Instructions
PHP Coolant Heater Operating Switch Instructions R4_DallasEDIT.doc
5
June 9, 2020
Set Automatic Stop Time
Once your Clock Time and Automatic Start Time have
been set and you have pressed
You will be able to set the Automatic Stop Time.
When the Lower colon flashes you can set the start time.
1) Rotate
to set the minutes
2) Press
to move to setting hours.
3) Rotate
to set the hours.
Press to move back to Clock Setting.
To Exit Time Setting menu simply wait 5 seconds.
Clock with Flashing Minutes
(two digits on right)
Lower Dot
in Colon ONLY appears
Flashing
Clock with Flashing Hours
(two digits on left)
Lower Dot
in Colon ONLY appears
Flashing
Additional Features - Heater in Off Mode
Fuel Pump Priming
Upon initial installation and before heater has be run it is
possible to fill the fuel line / bleed air out of the system
using the controller.
Press
5 Times to activate fuel pump.
Run fuel pump until fuel reaches the heater
Press the
to Shut the Fuel Pump Off
Running Water Pump Only
Press and Hold
3 Seconds
To Activate Water Pump
Press
To switch Water Pump off.
Self Diagnostics:
If the heater’s ECU detects a fault during operation,
the display will flash and an error code.
Refer to the diagnostic fault code legend for further information.
Error
