A
—MS2 Two Stage Electronic Temperature Control Installation Bulletin
5
F
ault/Alarm Codes
Table 4: Status Codes (steady on display)
Status Code
Indicates
On
Binary Input is closed.
OF
Binary Input is open.
Table 5: Fault/Alarm Codes
Error Code (Flashing on Display)
System Status
EE
Program failure; control must be replaced.
Alarm message displays, other outputs off.
FI
Indicates an open or shorted temperature sensor.
Alarm message displays. Correct problem and cycle
power to reset.
AI
Binary input (
IF
) Option 1 selected and binary input open
for longer than time delay (
id
).
Control output is switched off; alarm message displays.
Correct condition to reset.
DF
Binary input (
IF
) Option 3 is selected and binary input open.
Control output is switched off. Close binary input to reset.
HI
Temperature has reached or exceeded (se
AH
).
Alarm message displays. Correct condition to reset.
LO
Temperature has reached or fallen below (setpoint -
AL
).
Alarm message displays. Correct condition to reset.
O
rdering Information
Table 6: Specifications
Power Requirements
3.7 VA @ 24 VAC, 50/60 Hz, Class 2 (20-30 VAC)
Ambient Conditions
Operating:
+14 to +140°F (-10 to +60°C); 0 to 95% RH (non-condensing)
Storage:
-22 to +176°F (-30 to +80°C); 0 to 95% RH (non-condensing)
Accuracy
+1.8 F° (+1C°)
Agency Listings
UL Recognized: File E194024, CCN XAPX2
Canadian UL Recognized: File E194024, CCN XAPX8
FCC Compliant per Class A Digital Device, Part 15
Canadian DOC Compliant per Class A, Radio Interference Regulations
Table 7: Ordering Information
Item Code
Description
MS2DR24T-11C
MS2 DIN Rail Mount Control; A99BB-200C sensor included
MS2PM24T-11C
MS2 Panel Mount Control; A99BB-200C sensor included
A99BB-200C
A99B Temperature Sensor; Cable length 6-1/2 ft (2 m)
The performance specifications are nominal and conform to acceptable industry standards. For application at conditions beyond these
specifications, consult Johnson Controls/Penn Refrigeration Application Engineering at (414) 274-5535. Johnson Controls, Inc. shall not be
liable for damages resulting from misapplication or misuse of its products.
Controls Group
507 E. Michigan Street
P.O. Box 423
Printed in U.S.A
Milwaukee, WI 53201
www.johnsoncontrols.com
