Owner’s Handbook Page 19
VOLTAGE (05) DIAGNOSTIC CODE:
PROHEAT constantly monitors voltage at the heater. The range for a 12-volt heater is 9.5 to 16 volts
and for a 24-volt heater, 19.5 to 32 volts. Should the voltage go out of this range for longer than 10
seconds, the PROHEAT will shut down and the above code will be indicated.
• Voltage with the heater running or trying to start to ensure that the system is loaded
• Wire connections at the battery and the connector at the PROHEAT PCM
• The power harness for routing and abraded areas
• For faulty connections at PROHEAT components and internal harness
• Battery condition (dead cells, cleanliness). Load test if necessary
• That batteries are at least 900 CCA (4 Group 31’s recommended) to ensure an 8 to 9 hour use of
the PROHEAT and sleeper fan
• Use of accessories such as heated mirrors, satellites, refrigerators, DVD’s, etc. (will shorten
the time the PROHEAT can operate)
• Fan speed required in order to move the hot air throughout larger sleepers.
Troubleshooting
Function Diagnostics
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