Water Leaks - Lennox BAC 030 SNM 3M Installation, Operating And Maintenance Manual

SERVICE DIAGNOSTIC
Electric heater
Fault
High temperature trip out on
electric heater

Water leaks

Fault
Water found in the ventilation
section
Water ingress in the fi lter
compartment
CLIMATIC™ Displays
Fault
Nothing is written on the screen
but it's enlightened
Nothing occurs on the unit or an
option disappeared
The message "no link" appears
All the units are extinct
BALTIC-IOM-0412-E / Service manual
Possible cause and symptoms
Low airfl ow rate
Incorrect position of the klixon
Possible cause and symptoms
Cooling mode:
water carried away from the coil because of
excessive airfl ow and speed on the coil.
Low air pressure in the compartment due to
a high airfl ow rate or a high pressure drop
before the fan
Check seals around the ventilation section.
Water ingress through a leaking fresh air hood
or when running 100% fresh air
Possible cause and symptoms
Idem
Possible problem of units' confi guration
Problem of addresses' recognition
Problem main board plan addressing
Solution
Measure and estimate the airfl ow and pressure and compare
with the specifi cation from customer.
Check that the klixon, is positioned in the airfl ow, relocate
klixon if necessary
Check that there is no heat transfer from the klixon support.
Solution
Estimate the airfl ow rate and check the speed is lower than
2,8 m/s
Check fi lter
Reduce airfl ow rate
Check the door seal
Check for the presence of silicone seals in the corners of the
door and at the bottom of the refrigeration section bulkhead.
Check the seals and fl anges in the fresh air hood
Reduce the airfl ow rate if necessary
Solution
Press on the three right-hand side's buttons at the same time
during a few seconds then reconfi gure display address setting
at 32.
Check the instructions from 3811 to 3833 and reconfi gure
options if necessary.
Disconnect the DS from the unit and then reconnect it.
Disconnect then re-plug; disconnect each unit from the others
then change all the plan addresses
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