SECTION 4—TROUBLESHOOTING
17
Perfecto
2
™
Power Loss:
(Continued)
Internal Status Indicators:
RED: Off
GREEN: Off
Unit plugged in, power
switch, alarm off. Battery
Free circuit drained
P.C. board.
a. P.C. board damaged.
b. Loose or damaged connector.
a. Replace
Replacing P.C. Board on page 59.
b. Repair or replace connector.
Internal Power
Loss Senso
2
:
Internal Status Indicators:
RED: Off
GREEN: Off
Alarm may or may not be on.
Control Panel Indicators:
RED: Off
YELLOW: Off
GREEN: Off
Fan operates, Compressor
not operating.
Transformer assembly.
a. Faulty.
b. Connector loose or
disconnected.
c. Faulty wiring.
a. Replace. Refer to Replacing the
b. Reattach connector.
c. Replace transformer assembly. Refer
to Replacing the Transformer on
page 62.
P.C. board faulty.
Replace P.C. board. Unit requires retiming
after P.C. board replacement. Refer to
Replacing P.C. Board on page 59.
High Pressure:
Internal Status Indicators:
RED: One Flash
GREEN: Two Flashes
Unit plugged in, power switch
on, continuous alarm.
Compressor shut down.
P.C. board:
a. Malfunction
b. Disconnected wire.
c. Shifting valve at pressures greater
than 25 p.s.i. for Perfecto2.
a. Set flow to max L/min. for
concentrator. Check voltage across
Pilot Valve 1 on 200 volt scale. If
meter reads 0 volts when unit is
turned on, replace P.C. board
b. Check spade connectors on pilot
valves 1 or 2 and connectors on P.C.
board.
c. Replace P.C. board. Unit requires
retiming after P.C. board
replacement. Refer to Replacing P.C.
4-way Valve:
a. Not shifting.
b. Bad coil.
c. Coil resistance.
a. Check voltage. If voltage rises to
approximately 24 volts D.C. when
unit shuts down, P.C. board is
functioning properly. Replace the
valve if shorted or open. Refer to
b. Replace 4-way valve. Refer to
c. Coil should read 175 ohm ± 20.
Compressor inlet filter dirty or
plugged.
Replace compressor inlet filter. Refer to
Replacing the Compressor Inlet HEPA
Filter on page 26.
SYMPTOM
PROBABLE CAUSE
SOLUTION