The Ecc Control Module - Intellitec ELECTROINC CLIMATE CONTROL Service Manual

ELECTRONIC CLIMATE CONTROL

THE ECC CONTROL MODULE:

The Control Module performs the timing, sequencing, switching, and load shedding functions for the furnace/s
and air conditioner fans and compressors. It is often located under the refrigerator. The circuitry in this module
decodes the control signals sent to it via the multiplexed communication link from the ECC Thermostat.
The Control Module operates the furnace/s by closing a set of relay contacts. The relay contacts for the front
furnace are connected to pins 1 and 2 of connector J4, and the contacts for the rear furnace are connected to
pins 4 and 5 of the same connector. They are electrically isolated from all other circuitry on the Control Module.
The contacts are functionally equivalent to the contacts on a wall mounted thermostat and, as such, are wired
to the blue and black thermostat leads from each furnace. The coach may be equipped with one or two
furnaces. On coaches equipped with one furnace, the furnace should be wired to pins 1 and 2 of connector J4.
The pigtail connector supplied with the system (PC4) utilizes the following color codes:
PC4
/J4
pin
1 FRONT FURNACE THERMOSTAT (BLUE)
2 FRONT FURNACE THERMOSTAT (BLACK)
3 KEYED - NOT CONNECTED
4 REAR FURNACE THERMOSTAT (BLACK)
5 REAR FURNACE THERMOSTAT (BLUE)
INTELLITEC
FUNCTION
4
COLOR
WHT/BLUE
WHT/BLK
BLK
BLU
131 EISENHOWER LANE NORTH
LOMBARD, ILLINOIS 60148-5413
630-268-0010 / 1-800-251-2408
53-22130A100