Page 76
MS8C / MS8H (208-230V)
N
Y
N
Y
N
Y
N
Y
N
Y
There is a fault with the
tested circuit on the
outdoor (control)
Measure the AC voltage between
terminals (L and N) or (L1 and L2) on
outdoor unit terminal strip.
Fault
eliminated?
Switch off the power and wait 20 minutes; or
use DC voltmeter to measure the voltage on
the two ends of capacitor, until the voltage is
lower than 20V.
Reconnect to
terminal.
Apply power
to unit and
turn on.
Did this eliminate
the fault?
Voltage higher than 103.5V
(115V units) and 187V for
208-230V units.
Use DC voltmeter to measure the voltage
on the two ends of the capacitor.
Replace outdoor
control
Switch unit on and wait one
minute.
Voltage within 103.5V and
126.5V for 115V units and
187-253V for 208-230V units)
Switch off the power
and repair the supply
power to restore the
previously reference
voltage ranges.
Check the reactor (choke) line connection on the
outdoor control to verify that it is connected using the
unit wiring diagram.
Replace the outdoor
control.
Is connection good?
End
Restore
power and
switch on the
unit
NOTE— Reactor (choke) line test procedure
reference here is applicable for both the
115V and 208-230V systems.
CAPACITOR CHARGE FAULT (OUTDOOR UNIT) (9-12K BTU SYSTEMS)
FIGURE 85
APPLICABLE ERROR CODE(S): PU, PH
VERIFY VOLTAGE
* 115VAC Systems: Use AC voltmeter to check voltage between L and
N on outdoor control.
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