Denso MOVINCOOL Climate pro k18 Service Manual page 19

Troubleshooting Chart
PROBLEM
Water leaking from unit
Abnormal noise or vibration
Communication module
not working properly
POSSIBLE CAUSE
Cracks in drain pan
Drain hose is blocked or damaged
(Optional drain pump)
Reversed air flow from drain hole due to
excessive negative pressure inside of unit
Fan interference
Fan deformation
Loose compressor nuts
Pipe interference
Loose panel screws
"P" LED indicator on communication module
is off due to AC power is not plug in and
communication module battery switch at
the OFF position
When the "L" LED indicator located on the
communication module is off, it may be due
to poor or no cellular (LTE) signal, connection
or unit is located in an area with high signal
interference or an area that restricts LTE
signal
When the "G" LED indicator located on the
communication module is off, it may be
due to poor or no navigation (GNSS) signal,
connection or unit is located in an area with
high signal interference or an area that
restricts GNSS signal
19
SOLUTION
Replace drain pan
Unblock or repair drain
hose
Clean air filters
Adjust interfering section
Replace fan
Tighten nuts
Adjust pipe
Tighten screws
Plug in AC power or set
communication module
battery switch to ON
position
RESET communication
module
To reset, press reset
button and confirm "P"
LED indictor blinks one
time and stays on