Orion System Two Condenser Head Pressure II Module - Manual (Page 13)

Two Condenser Head Pressure II Module Technical Guide
TROUBLESHOOTING
13
Figure 5: Two Condenser Head Pressure II Module Troubleshooting Diagram
Troubleshooting for Stand-Alone Mode
If you suspect or encounter general problems during operation of the
Two Condenser Head Pressure II Module while in Stand Alone Mode,
follow the Troubleshooting Flowchart in Figure 5 below.
Troubleshooting for Stand-Alone Mode
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
Enable
Inputs
?
BIN 2
Yes Yes
Pressure is ??
than Setpoint ?
No
Monitor DC
Volts on A ut 1 O
A ut Voltage O 1 & 2
Should Modulate
Up to a Max
Voltage of 10VDC
(See Sequence)
Higher
Monitor DC
Volts on
A ut 1 & 2 Voltage O
should Modulate
Down to a Min
voltage of 0VDC
(See Sequence)
Lower
There will
be No
Change on
A ut 1 O & 2
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
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)
Start Here
Is
Blinking?
No
Is
“ERROR”
LED Blinking?
No
Is There
24VAC @ “PWR”
Testpoint?
No
Verify
Incoming
Power
No Yes
Yes
Yes
Yes “STAT” LED
Are
Heat
# of
Detected
Check
Refrigerant
Charge on
All Circuits
On one of
Active
& A ut 2 O
A ut 1 & 2 O
A & B
Call AAON
Technical
Support
Call AAON
Technical
Support
Call WattMaster
Technical
Support
Is
A or B Fan or
Condenser
Water Valve
Operating?
Fan Speed
Be at 100%
or Water Valve
Position Will