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Operating Switch
PHP Water Heater Control Switch Operation Instructions
PHP Coolant Heater Operating Switch Instructions R4_DallasEDIT.doc
3
June 9, 2020
Adjusting Maximum Temperature:
To adjust max temperature (Either Operating Mode) :
Rotate Clockwise or Counterclockwise
In a snapping motion to the desired setting.
“WaterTemp” Mode Range: 30
℃
to 75
℃
.
“A/C” Mode Range: 14
℃
to 40
℃
While adjusting, the set point temperature
will flash.
After 3 seconds, the actual engine coolant
or cabin temperature be displayed
Operating Status
To access the heater operating status information
Press
To toggle through parameters sucessively.
After all 7 operating parameters have been viewed, the
controller will return to the home screen.
Operational information and corresponding
icons will display order:
1. Voltage (12 U)
2. Glow Pin Status (83 UA)
3. Fan Speed (5000)
4. Fuel Pump Pulse Frequency (H1:30)
5. Timed Shut Down (2:00)
6. Temperature (40
℃
)
Coolant Temperature (WaterTemp
mode) or Cabin Temperature (A/C
Mode)
7. Flame Sensor Temperature (086)
Timed Shutdown
To set the timed shutdown, first select the
Timed Shut
Down
Status mode (See Operating Status).
Default is 2:00 hours.
Adjust the time by rotating
Clockwise or Counterclockwise
In a snapping motion.
The time span is 15 minutes to 7 hours.
Count down time will be displayed.
Timer Functions:
The control switch can be used as a timer to automatically turn the heater on and off at desired times.
First – Set current clock time (24 hour clock)
Second – Set the desired start time.
Third – Set the desired stop time.
35ºC
40ºC
