FWE Air Supremacy Air Screen ASU-9 Installation Manual & Operating Instructions page 15

FWE ASU-9 AIR SUPREMACY AIR SCREEN
TROUBLESHOOTING GUIDE (cont'd)
PROBLEM
8. Start capacitor open or shorted or blown.
9. Run capacitor open, shorted or blown.
10. Relay defective or burned out.
11. Suction line frosted or sweating.
12. Liquid line frosted or sweating.
13. Noisy condensing unit.
14. Error Message:
POSSIBLE CAUSE/REMEDY
6. Evaporator Coil Iced - Defrost
7. Restriction In Refrigeration System - Determine Locations &
Remove
8. Dirty Condenser - Clean Condenser
9. Filter Dirty - Clean or Replace
1. Relay Contacts Not Opening Properly - Clean Contacts or
Replace Relay If Necessary
2. Prolonged Operation On Start Cycle Due To:
a) Low Voltage To Unit - Determine Reason & Correct
b) Improper Relay - Replace
c) Starting Load Too High - Correct By Using Pump Down
Arrangement If Necessary
3. Excessive Short Cycling - Determine Reason For Short
Cycling (see #6 above) And Correct
4. Improper Capacitor - Determine Correct Size
1. Improper Capacitor - Determine Correct Size & Replace
2. Excessively High Line Voltage (110% of rated max) -
Determine Reason & Correct
1. Incorrect Relay - Check & Replace
2. Incorrect Mounting Angle - Remount Relay In Correct
Position
3. Line Voltage Too High or Too Low - Determine Reason &
Correct
4. Excessive Short Cycling - Determine Reason (see #6 above)
& Correct
5. Relay Being Influenced By Loose Vibrating Mounting -
Remount Rigidly
6. Incorrect Run Capacitor - Replace With Proper Capacitor
1. Overcharge of refrigerant - Correct Charge
2. Evaporator Fan Not Running - Determine Reason & Correct
1. Restriction In Dehydrator or Strainer - Replace Part
2. Liquid Shut-Off (king valve) Partially Closed - Open Valve
Fully
1. Loose Parts or Mounting - Find & Tighten
2. Tubing Rattle - Reform To Free Of Contact
3. Bent Fan Blade Causing Vibration - Replace Blade
4. Fan Motor Bearing Worn - Replace Motor
Err1: Temperature sensor open or shorted
Err2: Dip Switch setting error
Err3: TBD
Err4: Under temperature error
Err5: Over temperature error
Err6: Shorted button on controller
Err7: Door switch shorted or open
Err8: Controller EEPROM error
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