MovinCool CM25 - Manual (Page 54)

54
TROUBLESHOOTING (cont.)
Condition
Checking Area
Possible Cause Remedy
Self-
Diagnostic
Codes
(Wall
mounted
controller)
Buzzer
Pattern
Unit
does
not
operate
at all.
LCD
displays
self-
diagnostic
codes.
E07 3 Drain hose is
clogged (for
optional drain
pump).
Check drain hose for
any blockages or
excessive kinks that
may prevent air flow.
To reset: Press
RESET button.
Drain hose trap
position is too high
to pump up
condensation water
(for optional drain
pump).
Improve hose
installation.
To reset: Press
RESET button.
Optional drain
pump is not
working.
Check the drain
pump connection.
Replace drain pump.
To reset: Press
RESET button.
HP 4 Operating outside
of the operating
temperature range
Check
environmental
condition.
To reset: Press
RESET button.
Insufficient air
volume
Clean air filter.
To reset: Press
RESET button.
Check ducting of
intake and exhaust
air, and make sure
there are no objects
that may prevent air
flow.
To reset: Press
RESET button.