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Daniel Wilson
Daniel Wilson,
Category: Medium and Heavy Trucks
Satisfied Customers: 4679
Experience:  Owner at DJ Wilson
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Sullair model 7500 I have a high 8N4 Fault. What is that?

Customer Question

Sullair model 7500 I have a high 8N4 Fault. What is that?
JA: What is the complete model and serial number of your machine?
Customer: Model 7509V AC Serial Number 201502090014
JA: Are you fixing this yourself? What have you tried so far?
Customer: Nothing we don't know what the fault is. It is 18 degrees this morning.
JA: Anything else you want the equipment mechanic to know before I connect you?
Customer: I don't think so I just need to know what the fault is.
Submitted: 2 months ago.
Category: Medium and Heavy Trucks
Expert:  Daniel Wilson replied 2 months ago.

Hi my name is***** will be glad to try to help. Bare with me while I look up your fault info.

Expert:  Daniel Wilson replied 2 months ago.

HIGH AN0 SENSOR (AN0-AN9)—

Device assigned to sensor input AN0 through AN9 (temp probe,transducer unit, etc.) or wiring between the device and the controller module has resulted in an open circuit.

LOW AN0 SENSOR (AN0 - AN9)—

Device assigned to sensor input AN0 through AN9 (temp probe,transducer unit, etc.) or wiring between the device and the controller module has resulted in a short circuit.

Expert:  Daniel Wilson replied 2 months ago.

What other symptoms are you having with this fault?