Faults Probes And Sensors - Lennox CLIMATIC 50 User Manual

FAULTY PROBES AND SENSORS
Description
One or more temperature probes or pressure sensors located on circuit n or elsewhere are short circuited,
cut or disconnected.
Probe or sensor affected by the problem
Water inlet temperature probe
Water outlet temperature probe
Air temperature probe
Heat recovery exchanger inlet temperature probe
Heat recovery exchanger outlet temperature probe
High Pressure Sensor
Unit without EEV
Low Pressure Sensor
Unit with EEV
Low Pressure Sensor or suction probe
Action
Immediate shut down of circuit n for faulty sensors.
Immediate shut down of ALL circuits for faulty water outlet temperature and air temperature probes.
No shut down for the other faults.
Fault signal shown on the display.
The remote fault signal is delayed by 6 minutes.
Reset
The unit returns to normal operation after the signal from the faulty probes or sensors is re-established.
Possible causes
Damaged probes or sensors
Wrong wiring or loose connection on a probe or
sensor
CLIMATIC 50 user manual – Chillers ranges
081, 083, 086, 087, 089, 1n1, 1n2, 2n6
Fault Code:
code 081
code 085
083
Code 1n1
Code 1n2
Code 2n6
code 086
code 087
Solving the problem
Remplace probe or sensor
Check probes and sensors connections and
wiring.
CL50-CHILLERS/IOM/1105-E
FAULT CODES
33
33