Sensors and overheating thermostats
Service
manual
40
Outlet air - Thermistor element (NTC sensor)
Function
The sensor measures the temperature in the outlet air and the signal is returned to the
main circuit board.
The main circuit board turns the heating unit off when the outlet air thermistor indicates that
the required temperature has been reached.
The resistance of this device is normally 4 to 6 kOhms at 20°C (68F) and it drops as its
temperature increases.
The sensor A (standard) is mounted on the same housing as the outlet air overheating
thermostat. The sensor B (condense) is mounted on the the same flange, but to the left as
the outlet overheating thermostat.
Error codes
The following error codes are related to this section.
E04, E18
See Service Manual for Compass Control for more information.
1
Standard Condense
A
B
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