6
SUMMARY OF ALERT CODE & CHARGE ASSIST
TM
LEDS
Charge Assist™ (CA) Procedure for a NON-Communicating
24VAC Control System
STEP 3
:
Press the mode button on the
CA
board and follow the
CA
procedures starting with
STEP 1
in the
Communicating
Comfort Control Section
above.
STEP 4:
After the
CA
control exits the
CA mode
CYCLE, the tech-
nician must then return the
NON-COMMUNICATING 24 volt indoor CONTROL to the
desired customer setting.
STEP 1:
Outdoor units coupled with 24 volt indoor units (outdoor
units require BAYACHP024* for 24V operation) require the
technician to set up the Variable Speed (VS) Air Handler
or VS Furnace with the DIP switches for the size of the
equipment installed. (Unit tonnage, CFM per ton 350,
400, 450 required, the blower delays and Heating airflow)
CA
cycle is compatible with ENHANCED Mode.
STEP 2:
A technician must set the indoor system control to call for
the
SECOND STAGE of COOLING
. The indoor
CON-
TROL
must be
set low enough
to ensure the system
continues to run in
SECOND STAGE of COOLING
throughout the
CA
mode cycle. The CA control will exit
the
CA mode CYCLE
if the system control does not stay
in the SECOND STAGE cooling cycle. (The
CA
Control
must see 24 Volts AC call on both Y1 and Y2.)
LED
Color
Fault LED
Alert
Code
Description
Control
Display
LED
Color
Description
90
Excessive Communication Errors
N/A
Flashing
See Charging Flash Rate
Loss of Heat/Cool Demand Message
(COMM)
Off
Charged or not in CA Mode
Loss of Bit Master
(Clock Signal)
On
Charge is Correct
2 Flash
Defrost Fault A
Y1
On
1st stage compressor requests
3 Flash
Defrost Fault B and/or C
Y2
On
2nd stage compressor request
4 Flash
Defrost Fault A and [B and/or C]
Fast Flash
Initialization at Power Up ~ 60 seconds
5 Flash
Ambient Temperature Sensor Fault
(Out of Range - Open or Shorted)
Med Flash
Oil Return Mode **
(Forced Defrost)
6 Flash
Coil Temperature Sensor Fault
(Out of Range - Open or Shorted)
Slow Flash
Standard operation
Low Pressure Cut Out Fault
(Open
outside of defrost Cycle-Hard lock out, cycle
power to reset)
Off
Charge Assist™ mode or no power to control
Low Pressure Cut Out Fault
Heat/Cool Lock out
LitePort
Occasional Flash For transmitting LitePort
TM
data
Low Pressure Cut Out Fault
(Open
outside of defrost Cycle-Short lock out)
Wait ¤
Flashing
Flash device count when in communication
(number of COMM products connected in system);
Rapid flashes followed by a pause indicates
disrupted communications
10 Flash
102
Y2 without Y1 - Miswire
(24 volt mode only)
N/A
Off
No power
11 Flash
67
Liquid Temperature Sensor Fault
(Out of Range - Open or Shorted)
N/A
On
Solid at power-up
12 Flash
113
Liquid Pressure Sensor Fault
(Out of Range - Open or Shorted)
ERR 113
Flashing
See Stabilization Flash Rate
13 Flash
67
External Outdoor Temperature
Sensor Fault
(Out of Range - Shorted)
N/A
Off
Not in CA Mode
PM Missing with local copy
(Operational)
ERR 114
ADD
On
System requires refrigerant charge
(Control has 24 volt AC output to Charge Solenoid)
Bad Data in PM with local copy
(Operational)
N/A
Ambient Temperature is out of range -
Ambient Temperature must be above 55°F
and below 120°F to enter CA Mode
Bad Data in PM no local copy
(Not Operational)
Note: ODT LED will flash 1 sec ON/OFF for 30
seconds and the CHARGING LED will flash 5 times per
second for 2 seconds, then exit CA.
PM Missing with no local copy
(Not Operational)
RECOVER
On
Need to recover refrigerant - Unit locked out
for 1 hour or press mode button to exit
Charge Assist™
15 Flash *
50
Duplicate OD Temperature Sensor *
N/A
Liquid pressure below 90 psig - Liquid
pressure must be above 90 psig to enter CA
Mode
16 Flash *
123
Demand Configuration Fault *
N/A
Note: LOW pressure LED will be on for 30 seconds
and the CHARGING LED will flash 5 times per second
for 2 seconds, then exit CA.
High Presure Monitor Fault
(Hard lock out, cycle power to reset)
ERR 80
Notes:
** Used with 20 SEER Models
High Presure Monitor Fault
(Short lock out)
Wait ¤
18 Flash
18
24V Sensing Error
(24V Missing at Y1)
ERR 18
N/A
ERR 79
ERR 67
Green
Charge Assist™ (CA) LEDs
Red
Notes:
On
Flashing
ERR 91
4 highest priority Faults display flash codes sequentially. 2 second pause between faults and 4 second pause between sequences. Cycle power to ODU to clear Faults.
* Alert flash code will not be implemented for initial release
¤
Wait
icon will appear on the Comfort Control during: Equipment minimum off time, Charge Assist
TM
, Short lock out (see Alert Codes "7 Flash" & "17 Flash")
CHARGED
17 Flash
80
LOW
ODT
Red
14 Flash
114
Amber
7 Flash
79
STATUS
COM
91
1 Flash
67
68
ERR 114
CHARGING
Printed from D802247P01 Rev08
