DeVilbiss iFill 535D - Troubleshooting Chart a

LT-1929
10
TROUBLESHOOTING
TROUBLESHOOTING CHART A
Problems During Initial Start Up
(From start up thru approximately 4 minutes run time.)
Symptom
(initial through 4 minutes) Possible Cause Remedy
(#1) No control panel lights or audible
alarm when unit rst plugged in.
1. Circuit breaker tripped or faulty in 535D or
fuse blown in 535I.
1. Reset or replace circuit breaker/replace
fuse.
2. No AC power at receptacle. 2. Check power source or use different
receptacle.
3. AC wire harness not connected to main PC
board.
3. Connect AC wire harness.
4. Light panel ribbon cable loose or not
connected to the main PC board.
4. Reconnect ribbon cable to main PC
board.
5. Defective DC power supply board. 5. Replace DC power supply board.
6. Defective light panel. 6. Replace light panel.
7. Defective main PC board. 7. Replace main PC board.
(#2) When start button is pressed:
- standby light stays on.
- nothing happens.
1. No cylinder present or not snapped onto
coupler.
1. Fully snap cylinder onto coupler.
2. Coupler switch not connected to main PC
board.
2. Connect coupler switch.
3. Defective light panel start switch. 3. Replace light panel.
4. Defective main PC board. 4. Replace main PC board.
5. Defective intensier coupler switch. 5. Replace intensier.
(#3) When start button is pressed:
- light panel standby light goes off
and full light comes on instantly.
- nothing happens.
1. DC wire harness disconnected at main PC
board.
1. Reconnect DC wire harness at main
PC board.
2. Faulty main PC board. 2. Replace main PC board.
3. Faulty DC wire harness. 3. Replace DC wire harness.
(#4) When start button is pressed:
- the standby light goes off and
lling light comes on.
- fan does not run.
1. Fan wires not connected to main PC board. 1. Connect fan wires.
2. Faulty fan wires or connector. 2. Repair or replace fan.
3. Faulty fan. 3. Replace fan.
4. Faulty main PC board. 4. Replace main PC board.
(#5) When start button is pressed:
- the standby light goes off and
lling light comes on.
- the fan runs.
- the rotary and four-way valves are
cycling.
- unit alarms after approximately
4 seconds.
1. DC wire harness not connected to rotary
valve hall effect board.
1. Connect DC wire harness.
2. Faulty main PC board. 2. Replace main PC board.
3. Faulty rotary valve. 3. Replace rotary valve.
4. Faulty DC wire harness. 4. Replace DC wire harness.
(#6) When start button is pressed:
- the standby light goes off and
lling light comes on.
- the fan runs.
- the rotary valve is not cycling, the
four-way is.
- unit alarms after approximately 4
seconds.
1. DC wire not connected to rotary valve
motor.
1. Connect DC wire harness.
2. Faulty main PC board. 2. Replace main PC board.
3. Faulty rotary valve. 3. Replace rotary valve.
4. Faulty DC wire harness. 4. Replace DC wire harness.
(#7) When start button is pressed:
- the standby light goes off and
lling light comes on.
- the fan runs.
- the rotary valve is cycling, the
four-way is not.
- after 10 seconds the compressor
does not run.
- the intensier is not cycling
- after 20 seconds the unit stops
and alarms.
1. Four-way valve connector is not connected
to DC wire harness.
1. Connect valve to DC wire harness.
2. Faulty main PC board.
2. Replace main PC board.
3. Faulty four-way valve.
3. Replace four-way valve.
4. Faulty DC wire harness.
4. Replace wire harness.