Invacare Platinum IRC5LXAW Service Manual page 20

SECTION 4—TROUBLESHOOTING
SYMPTOM
Low Pressure
Internal Status Indicators:
RED: One Flash
GREEN: One Flash
Or
RED: One Flash
GREEN: Three Flashes
Control Panel Indicators:
RED: On
YELLOW: Off
GREEN: Off
Unit plugged in, power
switch on, continuous
audible alarm.
Compressor shut down
(Failure to cycle due to
low pressure).
Defective Parts
Internal Status Indicators:
RED: One Flash GREEN:
Five Flashes
Or
RED: Two Flashes
GREEN: Three Flashes
Control Panel Indicators:
RED: On
YELLOW: Off
GREEN: Off
Unit plugged in, power
switch on, continuous
audible alarm.
Compressor shut down.
Unit Not Operating
Alarm: On or Off
Internal Status Indicators:
RED: Two Flashes
GREEN: Four Flashes Or
RED: Two Flashes
GREEN: Five Flashes
Platinum™Oxygen
PROBABLE CAUSE
Compressor inlet filter dirty or plugged.
Compressor:
a. Leaks at fittings or tubing.
b. Leaking or defective relief valve.
c. Insufficient voltage at outlet.
d. Worn cup seals or gaskets.
Heat exchanger:
a. Leak at tubing or body chamber.
b. Inspect tubing and heat exchanger.
Regulator cracked or leaking.
P.E. valve leaking.
Defective main valve coil.
Connector loose.
Defective P.E. valve coil (Resistance 80
ohm's ± 10).
Defective PC Board.
Defective P.E. valve coil. (Resistance 80
ohm's ± 10.)
Connector loose.
Defective P.C. board.
P.C. board Failure.
Replace compressor inlet filter. Refer to
Replacing the Compressor Inlet Filter on
page 30.
a. Tighten fittings. Replace or repair.
b. Repair leak or replace.
c. DO NOT use extension cords. Use
another outlet.
d. Rebuild top end of compressor. Refer
to Rebuilding the Thomas Model
2650 and 2660 Compressor on
page 39.
a. Replace or retighten.
b. Replace or retighten tubing. Replace
heat exchanger. Refer to Replacing
Heat Exchanger on page 56.
Replace regulator. Refer to Replacing
Regulator on page 54.
Replace P.E. Valve. Check voltage at P.E.
valve connector on 24 volt D.C. scale. The
P.E. Valve activates or energizes
approximately one second prior to the
activation of the 4 way valve with
approximately 24 volts. If voltage is in
excess of 24 volts consistently, replace the
P.C. board. Refer to Replacing P.C. Board
on page 63. If the P.C. board voltage acts
normally, replace the P.E. valve. Refer to
Replacing P.E. Valve on page 48.
NOTE: Check for leaks starting at the
compressor output through all the
pneumatic connections. Major leaks will
cause system pressures to remain below
adequate shift (exhaust) pressures and will
cause compressor shutdown.
a. Replace main valve.Refer to Replacing
4-Way Valve on page 69.
b. Replace main valve coil. Refer to
Replacing 4-Way Valve on page 69
Reattach connector.
Replace P.E. coil if shorted or open on
resistance check. Refer to Replacing P.E.
Valve on page 48.
Replace PC Board
Replace P.E. coil if shorted or open on
resistance check. Refer to Replacing P.E.
Valve on page 48.
Reattach connector.
Replace P.C. board. Refer to Replacing P.C.
Board on page 63.
Replace P.C. board.Refer to Replacing P.C.
Board on page 63.
20
SOLUTION
Part No 1118396