Proheat X45–School Bus - Manual (Page 99)

FLAME SENSOR
Figure 6-6 Test Battery
CHECK COOLING SYSTEM
• Check all heater hoses and connections for signs of leakage or damage.
• Repair or replace as required.
• NOTE: The coolant mix must be 50% Ethylene Glycol.
CHECK BATTERIES
• Check the condition of batteries and
the power connections.
The heater will not function properly
with weak batteries or corroded
connections.
6-4 PROHEAT INSTALLATION & SERVICE
6.2.5
CLEAN FLAME SENSOR
• To maintain proper sensor readings, the flame sensor glass should be
wiped clean.
• With the fan end removed, clean the sensor glass with water and a rag.
Glass should be clear.
6.2.4
6.2.6
Figure 6-5 Flame sensor