Zanotti un0 010, Workshop Manual

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154
Electronics and wiring
5.5 Temperature Probes
5.5 Temperature Probes
Probe Testing Procedure
All of these temperature probes are Resistance Thermometer, thus their electrical resistance
[Ω] is dependent on temperature, it can be tested at 10kΩ at 25°C (77°F ).
BA Cold Room Temperature Probe
Functions:
It is clamped on evaporator to measure evaporator inlet
air, thus cold room temperature.
Sensor Configuration menu calibration label : Csa
Connection : J7 - BA
Displayed Temperature Label: TA
Alarm: A01 - Room Sensor
BL Ev. Air Delivery Probe (Single-temp unit only)
Functions:
It is clamped on evaporator outlet side to measure
evaporator air delivery temperature. This information is
used by CPU for several function:
-
Calculate Evaporator Inlet/Outlet Temperature
Difference
-
Check air delivery temperature according anti-
freeze parameters
Connection: J7 - BL
Sensor Configuration menu label: P3P
SERV menu Displayed Temperature Labels :
-
Evap. Air Temp.
-
ΔT evaporator air
CAUTION! ! Evaporator temperatures are displayed in case P3P parameter is set-up to ON only.
Alarm: AO3 - Evaporator temperature probe failure.