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Operating Switch
PHP Water Heater Control Switch Operation Instructions
PHP Coolant Heater Operating Switch Instructions R4_DallasEDIT.doc
1
June 9, 2020
Overview:
The PHP Control Switch allows you to turn the heater on and off, regulate temperature, set operating
mode, timed shutdown and timed startup functions. It also facilitates troubleshooting by providing
diagnostic codes.
Operation Buttons and Display Icons:
Programming Keys:
1.
On / Off & Select
2.
Operation Status
3.
Switch Modes
Display Icons:
1.
Heating Mode
(Flashes in standby mode)
2.
Heater On
3.
Heater Off
4. Degrees Celsius
5. Water Temp Mode
6. Automatic Climate Mode
7. Indicates Run Time
8. Indicates Error
65ºC
WaterTemp
A/C
TIM
Error
On
Off