Orion System One Condenser Head Pressure Module - Manual (Page 16)

One Condenser Head Pressure Module
Technical Guide 16
Troubleshooting for Stand Alone Mode
If you suspect or encounter general problems during operation of the One
Condenser Head Pressure Module while in Stand Alone Mode, follow
the Troubleshooting Flowchart in Figure 6 below.
Troubleshooting
Figure 6: One Condenser Head Pressure Module Troubleshooting Diagram
Is “ERROR”
LED Blinking ?
Note: “STAT” LED
will blink the # of
Good sensors
connected
No
Is
“STAT” LED
blinking correct
Sensors?
Check wiring
on all sensors
Measure DC
Volts between
SIGx & GND for
All sensors
Compare readings
to chart
.
No
Active?
BIN 2
Fan Speed
Be at 100%
Yes Yes
Pressure is ??
than Setpoint ?
No
Monitor DC
Volts on Aout 1
Aout Voltage
Should Modulate
Up to a Max
Voltage of 10VDC
(See Sequence)
Higher
Monitor DC
Volts on Aout 1.
Aout Voltage
should Modulate
Down to a Min
voltage of 0VDC
(See Sequence)
Lower
There will
be No
Change on
Aout 1
Same
1 Blink =
None of the
Sensors are
Check wiring
on all sensors
Measure DC
Volts between
SIGx & GND for
all sensors
Compare readings
to chart
Call AAON
Technical
Support
Yes
2 Blinks =High
Pressure on one
of the Sensors
(More than
500 PSI)
3 Blinks =
Lo Pressure
the Sensors
Less than 35 PSI
Check
Refrigerant
Charge on
All Circuits
Head Pressure Control
Troubleshooting Flowchart
(Stand Alone Mode)
Is
Fan or
Start Here
Is
Blinking?
No
Is
“ERROR”
LED Blinking?
No
Is There
24VAC @ “PWR”
Testpoint?
No
Verify
Incoming
Power
Call WattMaster
Technical
Support
No Yes
Yes
Yes
Yes
Condenser
“STAT” LED
Water Valve
Operating?
Is
Input
Heating Enable
# of
Detected
Check
Refrigerant
Charge on
All Circuits
On one of
Call AAON
Technical
Support
or Water Valve
Position Will