Troubleshooting
Si33-105
188
Troubleshooting R407C PLUS Series Heat Recovery System
3.32
Excessive Number of Indoor Units
Remote
Controller
Display
UA
Supposed
Causes
!
Excess of connected indoor units
!
Defect of outdoor unit PC board (A1P)
Troubleshooting
The number of indoor units that can be connected to a single outdoor unit system depends on
the type of outdoor unit.
"
RSEYP16~20KJY1 ··· 20 units
RSEYP24~30KJY1 ··· 32 units
(VF059)
The total
of indoor units
displaying "UA" and indoor
units connected to the same
refrigerant system is
20 or 32 units or
less.
H
Replace outdoor unit PC board
(A1P).
Normal
NO
NO
There are too many indoor units
within the same refrigerant
system.
Push and hold the RESET button
on the outdoor unit PC board for 5
seconds.
YES
YES
Does a malfunction occur?
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Summary of Contents for R407C PLUS
Page 1: ...System R407C PLUS Series Heat Recovery System Si33 105 Service Manual ...
Page 11: ...Introduction Si33 105 x ...
Page 41: ...Specifications Si33 105 30 Specifications R407C PLUS Series Heat Recovery System ...
Page 147: ...Test Operation Si33 105 136 Test Operation R407C PLUS Series Heat Recovery System ...
Page 263: ...Si33 105 iv Index ...