Lennox CLIMATIC II User Manual

V2.2
-00
33
VACUUM SUCTION FAILURE
Logical variable : DPUMPDn
Incident codes KP02 : n5
KP07 icon :
Description
For 2 minutes, a compressor on circuit n is in operation and the liquid solenoid is not connected, but low
pressure is still below minimum.
Action
F Immediate halt of circuit n.
F The fault is displayed on the screen.
F The remote fault report is delayed for 6 minutes.
Resetting
The first 2 faults are automatically reset after 2 minutes.
After this, circuit n can only be restarted after a manual reset.
Note : Counters of “pump down” failures TOPUMPDn are all reset to zero daily at 6 pm, on condition that the
maximum number of authorised faults has not been reached.
Trouble-shooting Solution
Liquid solenoid blocked open by foreign matter. Change the solenoid valve.

Lennox CLIMATIC II Specifications

General

Brand	Lennox
Model	CLIMATIC II
Category	Control Unit
Language	English