Ideal Air 700875, Service Manual

Page: 23 / 54

page 23
700870,700875,700877 SERVICE MANUAL Portable Air Condi oners
3)Input Signal
The relay board receives inputs from the control panel, sensors,
and external devices to perform device control.
Symbol
TH1
10 k ohm at 77 °F
(25 °C)
10 k ohm at 77 °F
(25 °C)
10 k ohm at 77 °F
(25 °C)
181 °F (83 °C) or
more -29 °F (-34 °C) or
less
181 °F (83 °C) or
more -29 °F (-34 °C) or
less
181 °F (83 °C) or
more -29 °F (-34 °C) or
less
TH2
TH3
TH1
TH2
TH3
IN TEMP SENSOR
OUT TEMP SENSOR
ICE TEMP SENSOR
Type
Specificaon
Characterisc "Short"Detecon "Open"Detecon
Connector
Sensor Input
Symbol
Regulates temperature based on inlet ambient air temperature.
Changes fan speed from LOW to HIGH when pressed.
CON8
FAN Buon
If POWER BUTTON is pressed during operaon, unit stops.
ON/OFF Buon
Indicaon Funcon Connector
Control Panel Input
Symbol
CO
On: Between 10 to 20
mA at DC12 V
(Off: No signal)
On: Between 10 to 20
mA at DC12 V
(Off: signal)
On: Between 10 to 20
mA at DC12 V
(Off: signal)
On: Between 10 to 20
mA at DC12 V
(Off: signal)
On: Acvates “Defect control”
(Contact: Normally open)
LED shows “CO”, Output signal“ON”
Off: Acvates “Defect control”
(Contact: Normally open)
LED shows “FU”, Output signal“ON”
On: Acvates “Defect control”
(Contact: Normally closed):
LED shows “PS” output signal “ON”
On: Acvates “Defect control”
(Contact: Normally closed)
LED shows “FT”, Output signal“ON”
FU
PS
FT
CO
FU
PS
FT
External Pump Failure
Comp Overload
Pressure Switch
Tank Full Switch
Signal Specificaon Funcon Connector
External Input Signal Specificaon
Regulates temperature based on outlet cool air temperature.
SET TEMP Buon
SET TEMP Buon