Invacare Platinum IRC5LXAW Service Manual page 19

SYMPTOM
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.
High Pressure
Internal Status Indicators:
RED: One Flash
GREEN: Two Flashes
Unit plugged in, power
switch on, continuous
alarm. Compressor shut
down.
Part No 1118396
PROBABLE CAUSE
Transformer assembly.
a. Faulty
b. Connector loose or disconnected.
c. Faulty wiring.
P.C. board faulty.
P.C. board:
a. Malfunction.
b. Disconnected wire.
c. Shifting valve at pressures greater
than 25 p.s.i.
4-way Valve:
a. Not shifting.
b. Bad coil.
Sieve Beds contaminated.
SECTION 4—TROUBLESHOOTING
a. Replace. Refer to Replacing
Transformer Assembly on page 65.
b. Reattach connector.
c. Replace transformer assembly. Refer
to Replacing Transformer Assembly
on page 65.
Replace P.C. board. Unit requires retiming
after P.C. board replacement. Refer to
Replacing P.C. Board on page 63.
a. Set flow to max L/min. for
concentrator. Check voltage across
Pilot Valve 2 on 200 volt scale. If
meter reads 0 volts when unit is
turned on, replace P.C. board
b. Check spade connectors on pilot
valve 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.
Board on page 63.
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
Replacing 4-Way Valve on page 69.
b. Coil resistance should read 80 ohm ±
10. Replace 4-way valve. Refer to
Replacing 4-Way Valve on page 69.
a. Replace Sieve Beds.
19
SOLUTION
Platinum™Oxygen