KE2 Evap
OEM
Alarm Troubleshooting Guide
Q.1.61 January 2023
Page 12
© Copyright 2023 KE2 Therm Solutions, Inc., Washington, Missouri 63090
21214V3.0
Troubleshooting Tables
Alarm & Alarm Name
Description
Variables & Setpoints Corrective Action
Basic
Display
Combo
Display
Web-
pages
CoA
CoA
COMMU-
NICATION
ERROR
Network
Comms
Alarm
ONLY ACTIVE FOR
BONDED CONTROL-
LERS.
Yellow LED is illumi-
nated. Controller will
attempt to continue
to operate system
while this alarm is
present.
No communication
between controllers
for one minute or
more.
Variables
iP1 - IP Address Part 1
iP2 - IP Address Part 2
iP3 - IP Address Part 3
iP4 - IP Address Part 4
• Communication, Lead/Lag, and Compressor Sequencer Communications Alarms are
most commonly caused by local network issues.
• Verify all network switches are connected and functioning properly. Check that all
controllers in a bonded group, lead/lag pair, or compressor sequencer group are
powered up.
• Verify communication to each individual controller using whatever method is usually
used to communicate to the controllers in question (via IP address, KE2 SmartAccess
etc.). If one or more are unreachable, investigate those controllers and their network
cabling further.
• Ensure all cables are inserted fully into their respective jacks. Check for any damaged
cable.
• On new installations, where the cables are built in the field, check network cables for
proper wire color code (Ethernet standard A or B, see Q.5.5 Making Ethernet Cable for
more information). Also make sure copper for each wire goes fully into the clip. If one
or more wires is out of order or doesn’t fully insert into the clip, it needs to be fixed
before it can be used to communicate.
• Attempt to unbond and re-bond the controllers or unpair/re-pair for lead/lag (re-
member to re-enable Lead/Lag mode after re-pairing). If any of the controllers are
not discoverable from the Network page, investigate those controllers further.
CLL
CLL
LEAD/LAG
COMM
ERROR
Lead/Lag
Comms
Alarm
ONLY ACTIVE FOR
LEAD/LAG CONTROL-
LERS.
Yellow LED is illumi-
nated. Controller will
attempt to continue
to operate system
while this alarm is
present.
Communication lost
between lead/lag
controllers.
CCA
CCA
COMP SEQ
COMM
ERROR
CompSeq.
Comms
Alarm
ONLY ACTIVE WHEN
SITEVIEW IS ACTIVE.
Yellow LED is illumi-
nated. Controller will
attempt to continue
to operate system
while this alarm is
present.
Communication lost
to KE2 Compressor
Sequencer OEM.
EFL
EFL
FAILURE
Failure
Alarm
Yellow LED is illumi-
nated. Controller will
attempt to continue
to operate system
while this alarm is
present.
Email alert was not
confirmed by email
server provided after
seven consecutive
attempts.
Variables
iP1 - IP Address Part 1
iP2 - IP Address Part 2
iP3 - IP Address Part 3
iP4 - IP Address Part 4
Setpoints
dHC - DHCP mode
• Ensure the controller has Internet access. If possible plug a laptop into the Ethernet
cable at the controller to test Internet connection.
• Check the Network Info settings (gateway, DNS etc.) on the controller’s Network
webpage. If DHCP is enabled on the controller these settings should be provided
automatically to the controller by the local network.
• Email Failure Alarm is a function of the controller attempting to send out an email
alert using the information entered in the Alert Notifications section of the Settings
Page, and failing to communicate successfully with the email server provided. If us-
ing a custom email server, consider using the KE2 Therm Default Server instead.
• Servers requiring basic authentication should provide User name and Password,
and ensure it is correctly entered.
• Servers without authentication requirements should not enter information in the
User name or Password field. If unsure of server requirements and alarm occurs,
ensure both User name and Password are blank and retry.
• Check the Time Reference Options on the setpoints page of the controller webpage.
This is found under general information. If set to “Custom” ensure the web address
provided is a valid SNTP server. Alternatively, change the setting to “Internet” to use
a predefined SNTP server or “Local” to rely on the local web browser to update the
time.
ntP
ntP
TIMER
SERVER
COMM
Time
Server
Comm
Yellow LED is illumi-
nated. Controller will
attempt to continue
to operate system
while this alarm is
present.
Controller cannot
communicate with
external time of day
server (SNTP server).