CLIMATIC™50 – IOM – Rooftops/ Aircoolair CL50-ROOFTOPS-IOM-1107-E
41
Compressors shut down on LP Cutoff
Error code: 117, 127, 137, 147
Description
The low pressure switch of the circuit has been open for 2 minutes, while one compressor in the Circuit has operated
for 2 minutes.
The low pressure switch of the Circuit has been open for 1 hour.
Action
" Immediate shut down of the compressors in the circuit.
" Fault signalling.
If a DS50 is connected to the unit; Memorisation and diplay of all faults.
Otherwise; Memorisation and display only of the 3rd daily fault.
" Display of fault.
117, Circuit 1.
127, Circuit 2.
137, Circuit 3.
147, Circuit 4.
Reset
Automatic reset of the fault as soon as the low pressure becomes greater than the safety pressure switch cutoff limit
The fault will no longer be reset automatically after 3 cutouts in the same day and must be reset manually.
Note: The fault counter is cleared and reset every day at 10 am provided the maximum number of faults has
not been reached.
Possible causes Solving the problem
Not enough refrigerant in the circuit Adjust the refrigerant charge
Faulty expansion valve Check that the expansion valve is operating correctly
Filter drier blocked Replace the filter drier
Faulty low pressure switch Replace the low pressure switch
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