Daikin GYEQ20AN Service Manual page 175

SiAUY361411EA
39
Too Many Indoor Units Connected
Description Sub-code 0: The number of connected indoor units is beyond the upper limit specific to the outdoor unit
of the failure
Upper limit of connected indoor units exceeded; CPU mismatch; communication line connection failure;
Possible
causes communication line incorrectly installed
of the failure
Flow chart
Is No. Of Connected
Indoor Units Correct?
YES
Is Model Of Main CPU Correct?
YES
Check Communication wiring.
40
Total Indoor Unit Capacity Too Large
Sub-code 0: The total capacity of connected indoor units is beyond the upper limit specific to the outdoor unit
Description
of the failure
Upper limit of total indoor unit capacity exceeded; DIP switches misconfigured (for outdoor/indoor units);
Possible
causes outdoor unit memory switches misconfigured; CPU mismatch
of the failure
Flow chart
Are Switches Configured
Properly If Facility-Use/Outdoor Air
Processing Indoor Unit Is
Connected?
YES
Is Total Capacity Of Connected
Indoor Units Correct?
YES
Is Model Of Main CPU Correct?
YES
Are Communication Cables
Non-Defective?
YES
Change Indoor Unit P Board.
Troubleshooting
model.
NO
Connected Units.
NO
(Using Onboard Checker.)
model.
Turn ON Support For
NO
Facility-Use/Outdoor
Air Processing Indoor Unit.
NO
Check Total Capacity Of
Connected Indoor Units.
NO
(Using Onboard Checker.)
NO
Check Communication
Check No. of
Check Model
025907-00EN01
Check Model
Cables.
025908-00E
Flow Charts for Troubleshooting
Error
code
Error
code
P0
P3
164