Filter
Top Products
69
ELECTRONIC CONTROL BOARD COMPONENTS IDENTIFICATION
Low Fan speed
Medium Fan speed
High Fan speed
Max Fan speed
(Heat+Cool units along with Cool models
SL28 and SL36 only have 3 fan speeds)
Reversing Valve
Heater Relay
Heater Relay
Compressor Relay
LN
115 or 230 VAC
Voltage Conguration
(See next page for details)
Transformer
Indoor Coil Thermistor
(Green)
Outdoor Coil Thermistor
(Blue)
Indoor Ambient Air Thermistor
(Check here for 3.3 Volts DC)
Fuse
(6.3 Amps/250VAC)
L1
User Interface Connector
Discharge Air Thermistor
(Check here for 3.3 Volts DC)
(Check here for
3.3 Volts DC)
When checking the 3.3 Volts DC for the thermistors, if there is no voltage or wrong voltage, replace control board.
For thermistor testing, see page #57 for resistance values.