Norcold 9182 Service Manual & Parts List page 18

Section 5 - AC Input Voltage too Low (See Internal Control Information)
Corrective Actions
Check input AC supply voltage to refrigerator. Correct input AC voltage (108 VAC 132 VAC max.).
Section 6 - AC Input Voltage too High (See Internal Control Information)
Corrective Actions
Check input AC supply voltage to refrigerator. Correct input AC voltage (108 VAC 132 VAC max.).
Screen 7 - DC Input Voltage too Low (See Internal Control Information)
Corrective Actions
1. Check input DC supply voltage to refrigerator. Correct input DC voltage(10.5 VDC min.)
2. Check DC supply wire connections at power board. Secure connections if loose.
3. Check vehicle's battery charging equipment. Correct charging equipment.
Section 8 - DC Input Voltage too High (See Internal Control Information)
Corrective Actions
1. Check input DC supply voltage to refrigerator. Maximum input DC voltage is 15.4 VDC.
2. Check vehicle's battery charging equipment. Correct equipment.
Section 9 - Burner Failed Ignition and DC Heater Failed - 3 Way Models Only
Corrective Action
Correct input DC supply voltage (10.5 VDC min. - 15.4 VDC max.).
The control senses AC heater current when the AC heater should be OFF.
Corrective Action
Replace power board
Section 11 - DC Heater Output Fault - 3 Way Models Only
The control senses DC heater current when the DC heater should be OFF.
Corrective Action
Replace power board
Section 10 - AC Heater Output Fault
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