ELECTRONIC CLIMATE CONTROL II
SERVICE MANUAL Part No’s. 00-00855-000 / 00-00856-000
Intellitec
1485 Jacobs Rd.
Deland, FL 32724
386.738.7307
www.Intellitec.com
- 2 -
P/N 53-00855-856 Rev. C 080819
How It Works
The System contains two major components, the ECC Thermostat and the ECC Control Module, along with additional
external sensors which are connected to these modules.
THE ECC THERMOSTAT:
The Thermostat allows the owner to set the air conditioning and heating systems’ modes and temperature. The
electronics in this panel measure ambient temperatures via two external temperature probes (front and rear). Based on
the mode, set point temperature settings, and the temperature measured by the probes, the thermostat sends appropriate
control signals to the ECC Control Module. These signals are sent via a two wire multiplexed communication link labeled
IPX SIG and IPX GND. The Control Module then operates the air conditioners or furnace as required to maintain the set
temperature.
HEAT
HEAT
OFF
OFF
LO FAN
LO FAN
HI FAN
HI FAN
LO COOL
LO COOL
HI COOL
HI COOL
AUTO COOL
AUTO COOL
FRONT
BOTH
REAR
FRONT
BOTH
REAR
FURNACES
FURNACES
SHED
SHED
AC 1
AC 1
ON
ON
SHED
SHED
AC 2
AC 2
ON
ON
ELECTRONIC
CLIMATE CONTROL
ELECTRONIC
CLIMATE CONTROL
75
70
TEMPERATURE
SET
TEMPERATURE
SET
There is a single function switch that controls the functions of the two air conditioner (A/C1) and (A/C2) systems. The
potentiometer allows the user to select a desired temperature for the system in the range of 50 to 90 degrees Fahrenheit.
Moving the controls down lowers the set point temperature. The seven-position function switch is used to select the
furnace’s and air conditioners’ operating modes.
A brief description of each mode is as follows:
HEAT -
The Thermostat controls the furnace/s to maintain the desired temperature in the coach. The furnace/s will be
energized when the ambient temperature at the corresponding front or rear temperature probe is 2 degrees below
the set point temperature and shut off when the ambient temperature is at the set-point temperature. On single
furnace versions of the Thermostat (00-00856-_10) the furnace selector switch is not present. Load shedding is
not active in this mode.
OFF -
All control settings are disabled and the Thermostat is placed in a low-current “sleep” mode in order to minimize
battery drain (35 - 45mA).
LOW FAN -
The air conditioner fans are energized on low speed. Load shedding is active.
LOW FAN -
The air conditioner fans are energized on low speed. Load shedding is active.
HIGH FAN -
The air conditioner fans are energized on high speed. Load shedding is active.
