Carrier bryant Multi-Zone 38MARBQ09 18AA3 Series Service Manual page 24

38MAQB18~30K Outdoor Unit
Outdoor Fan Error – F5 (page 1 of 2)
Error Code
Indoor Unit or Wired Control Display – F5
Malfunction decision conditions
Supposed Causes
Troubleshooting:
Troubleshooting:
Follow the "1st Steps for DLS Troubleshooting"
in the beginning of this guide, if you have an
active error, procedure below.
Shut OFF the power supply.
Rotate the Indoor fan by hand.
Does the fan rotate freely?
With power still OFF, open
ODU, remove top cover
and top control box cover.
Error may only displayed every 3 minutes, during this time you may
see either "normal display" or "88" on indoor unit or wired control.
No
Yes
F5 – Outdoor Fan Problem
Dr. Smart Display (Debugger) – E7 & E71
When the Outdoor fan speed is too slow (300 RPM
or less) for 3 minutes or more, the unit stops and
the LED displays the Error Code for 30 seconds.
Then retries until locks out.
• Wiring mistake
• Fan motor faulty
• PCB faulty
Dr. Smart
Display
Free up, replace any broken
parts so fan spins freely
Locate Fan Harness
1 - Red
3 - Black
4 - White
5 - Yellow
6 - Blue
Continued on next page