Si33-105
Troubleshooting
Troubleshooting R407C PLUS Series Heat Recovery System
157
3. Troubleshooting
3.1
Indoor Unit:
Error of External Protection Device
Remote
Controller
Display
A0
Supposed
Causes
!
Actuation of external protection device
!
Improper field set
!
Defect of indoor unit PC board
Troubleshooting
(VF029)
Actuation of external protection
device.
Change the second code No. to
"01" or "02" .
Indoor unit PC board replacement.
External
protection device is
connected to terminals T1 and
T2 of the indoor unit
terminal block.
ON/OFF
input from
outside (mode No. 12,
first code No. 1) has been
set to external protection
device input (second
code No. 03)
by remote
controller.
YES
NO
NO
YES
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 ...