Johnson Controls ER54 - Technical Data and Error Codes; Technical Specifications; Error Messages and Actions

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This document is subject to change without notice
IS_ER54 ER55_24-85737-1358 Rev. A
Technical Specification
Main Function
Messages and Error Codes
Temperature Menu
Setpoint Menu
Clock Menu
Product Codes
ER54-PMW-xx1C ER55-DR230-xx1C
Power Requirements
115-230 VAC/VDC ±10%,
50/60 hZ, 3 W
230 VAC/VDC ±10%,
50/60 hZ, 3 W
Protection Class
IP55 (front) - IP20 (back) IP20
Ambient Operating
Conditions
-10 °C to 50 °C
15 to 80% RH (non-condensing)
Real Time Clock battery
>150 hours, self-rechargeable
Range
-40 to 70 °C
Accuracy
+/- 1K
Sensor
NTC, A99
Relay Outputs
see figure 3 see figure 4
Dimensions
see figure 1 see figure 2
Compliance
CE Mark, Low Voltage Directive 2006/95/EC
CE Mark, EMC directive 2004/108/EC
Positive and Negative
Temperature
Keyboard Lock
Direct Power Supply Real Time Clock
Communication Port Copying Key
Thermostat Control Fan Control
Defrost Control Light Control
Temperature Alarm
(High/Low)
Temperature Monitoring
(Min/Max)
Multifunction Input Auxiliary Output
Code
Description Action
F1 t1 sensor failure To check t1 wiring or replace it
F2 t2 sensor failure To check t2 wiring or replace it
F3 t3 sensor failure To check t3 wiring or replace it
A1 General alarm To resolve alarm cause
A2 Report alarm To resolve alarm cause
A3 Door open To close the door
Fon Fan only mode To reset fan only mode with Digital Input
oFF Standby To restart unit with keyboard or Digital Input
d Defrost active To wait defrost completion
hi High temperature alarm
To check plant (abnormal temperature)
Lo Low temperature alarm
Code
Description
t1 Return air temperature
t2 Evaporator temperature (visible only if selected)
t3 Discharge air / 2nd Evaporator temperature (visible only if selected)
thi Monitored temperature highest peak
tLo Monitored temperature lowest peak
Loc Keyboard lock parameter
Code
Description
cSP Setpoint
Code
Description
MM Minutes
hh Hours
dAY Day of the week