Page 72
MS8C / MS8H (208-230V)
Troubleshooting
Breaker trip or
blow fuse.
Check power connections and
repair.
Power connections are incorrect.
Repair wiring connection to the
transformer; measure the output
voltage of the transformer. If incorrect,
replace transformer.
Non-responsive
system after power
up. No audible
response and
control input is
unresponsive.
No response from
remote control.
Issue could be system circuit fault. Verify circuit
breaker is installed correctly. If installation is
correct, then replace circuit breaker.
Transformer connection is loose, bad
contact, or the transformer has malfunction.
Press the AUTO (MANUAL) button to
place the unit into AUTO mode. If system
is unresponsive, check wiring between
indoor and outdoor unit. If system is
responsive and runs normally. Verify IR
receiver connection to indoor control is
good and that remote control is working.
Check voltage and if lower than 10% of the rated
input voltage, then determine fault and repair.
Indoor unit infra-red receiver wire harness
has a loose connection.
Infra-red receiver has malfunction.
Circuit breaker immediately trips when
set to ON on remote control.
Circuit breaker trips after
system has been running for
a few minutes.
Fuse on outdoor control has blown.
Measure insulation resistance to
ground and see if there is any leakage.
Replace fuse.
System failed to start.
Outdoor control has malfunction.
Remote control batteries are dead
Remote control has malfunction.
Replace batteries.
Replace remote control.
System voltage is low
No power.
Check power supply circuit.
SYSTEM FAILED START UP (ALL SIZES)
FIGURE 83
APPLICABLE UNIT SIZE(S): All
APPLICABLE ERROR CODE(S): NONE
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