Specifications

CONTROLLER (Feb. 2009)
CNTR-41
CONTROLLER
DATA U4
3. SYSTEM CONTROLLER
Fig. 3 GB-24A, TB3 scheme.
Centralized controller
GB-24A
Indoor/outdoor transmission line
TB3
ME remote
cotroller
CN41
(3) Power supply of M-NET from outdoor unit connector TB3.
GB-24A can also receive power supply from R410A/R407C/ R22 outdoor unit connector TB3. However, if the
outdoor unit shuts down, GB-24A will also automatically shut down. Therefore, this scheme is not recommended
for air conditioning system consisting of multiple outdoor units.