TROUBLESHOOTING INDEX [WATER HEATER SYSTEM]SM2445631
TROUBLESHOOTING INDEX [WATER HEATER SYSTEM]

id0703d1800300

No.

TROUBLESHOOTING ITEM

DESCRIPTION

1
Water heater unit does not operate
• Water heater unit does not operate (no flame noise) even under operation conditions (ambient temperature is less than 5 °C {41 °F} and engine coolant temperature is less than 60 °C {140 °F}).
• Communication between M-MDS is disabled.
2
Abnormal noise from water heater unit
• Combustion noise from water heater unit is loud.
• Noise and vibration is transmitted to cabin during water heater unit operation.
3
Smoke from water heater unit
• Smoke or odor is emitted during water heater unit operation.
• Smoke or odor is emitted right after water heater unit starts operation.