Proheat X45–School Bus - Manual (Page 61)

Operation States:
8.8. – Power Up
• – On
Pu – Cool Down (Purge)
The operation indicators signal normal functioning of the PROHEAT. These two
states do not indicate a fault.
OPERATION INDICATORS
The ON indicator code communicates that the PROHEAT is operationally “ON”
whenever the On LED is solid. This indicates a Mode of Operation (see page
4-5) is active.
On
WARNING
The "ON" LED indicates that the heater can start at any time. Refer to
page 4-5 to page 4-7.
The PROHEAT will be in the Cool Down (Purge) state as defined in the Modes
of Operation (see page 4-5) when “Pu” is displayed.
Purge
5.1.1
The Power Up indicator communicates that the PROHEAT power has been
supplied. All segments of the LED momentarily flash and then turn off.
Power Up
PROHEAT INSTALLATION & SERVICE 5-4