Bulletin 100-50-9.1 –
Page 123
RED
denotes required control configuration to enable alarm and/or control response.
Alarm
Description
Cause
Control Response
Self
Clearing
d2
No Discharge Air Temperature sensor
detected on Center Evaporator (S3C
Valve Module DA2 input).
3 Evaporators installed in case.
Sensor must be detected on initial
power up to enable alarm.
Discharge Air Temperature sensor not
connected, miswired or faulty.
EEPR Temperature control selected.
1.
Single case in line-up. One DA
sensor connected to S3C Valve
Module:
EEPR moves to calculated
“fault” position.
2.
Multiple cases or evaporators in
line-up with Discharge Air sensors
available:
Average temperature
value from remaining available
sensors is used for control.
Yes
d3
No Discharge Air (DA) Temperature
sensor detected on Right Evaporator
(S3C Valve Module DA1 input).
2 or 3 Evaporators installed in case.
Sensor must be detected on initial
power up to enable alarm.
Discharge Air Temperature sensor not
connected, miswired or faulty.
EEPR Temperature control selected.
1.
Single case in line-up. One DA
sensor connected to S3C Valve
Expansion Module:
EEPR moves to
calculated “fault” position.
2.
Multiple cases or evaporators in
line-up with Discharge Air sensors
available:
Average temperature
value from remaining available
sensors is used for control.
Yes
No Case Surface Temperature sensor
detected (S3C Case Control AX input).
Sensor must be detected on initial
power up to enable alarm.
Discharge Air Temperature sensor not
connected, miswired or faulty.
Antisweat Dew Point control selected:
Antisweat heaters run at 100% on.
Yes
No Air Temperature/ Humidity sensor
detected.
Sensor must be detected on initial
power up to enable alarm.
Air Temperature/Humidity sensor not
connected, miswired or faulty.
Antisweat Dew Point control selected:
Antisweat heaters run at 100% on.
Yes
og
No Clogged Drain sensor detected
Sensor must be detected on initial
power up to enable alarm.
Clogged Drain sensor not connected,
miswired or faulty.
Yes
