5-20 Contacts for building automation
5-20.1 INPUT CONTACT (J11 - green)
The status of this input affects system operation according to the following:
Contact OPEN : system does not operate (always OFF) –
inputs from wireless remote controller are not processed
Contact CLOSED: system operates in the normal way according to
the inputs coming from wireless remote controller
5-20.2 OUTPUT CONTACT (J20)
This connector is directly tied to the contact (normally open) of a power relay which activates every time the
following alarm condition occur:
RAT damaged
ICT damaged
Communication error
Fault on outdoor unit
In this case when alarm happens, on poles 1 and 3 of J20 connector, 220 VAC-50Hz are available.
Max electrical load:
1A- 240VAC
7-4 Outdoor unit does not run and no fault is displayed
7-8 Noise problem
20
