USER GUIDE
Troubleshooting - Extended 8
SAFETY • INSTALLATION & INTEGRATION • OPERATING INSTRUCTIONS • MAINTENANCE •
SERVICE
To access All Errors follow the steps below.
1. Use
to select “All Errors”.
2. Press .
3. Press
and to scroll through available
information.
4. To clear the error log press
to select “Clear Errors”
and press to confirm.
5. To exit the Actual Temps menu press
to select
“Return to Menu” and press to confirm.
Relay Status
Relay status displays the current state of each relay. While
all available relays are displayed, only a portion are used.
NOTE: The Cond (Condenser Fan) will switch state with
the compressor relay, however the condenser fan is
actually powered through a DC output and is independent
of the Cond relay. Condenser fan status can be viewed
through the “Output” service menu option.
To access Relay Status
1. Press to select “Relay Status”.
2. Press .
3. Press
and to scroll through available
information.
4. To exit the Relay Status simply press
to exit.
ID
Description
Solution
No Comm Unit lost
communication to the
display.
Check display cable.
Replace if necessary.
Zone T
Open
Zone thermistor
circuit open.
Check connection. Replace
if necessary.
Evap T
Open
Evaporator
thermistor circuit
open.
Check connection. Replace
if necessary.
Amb
Thrm
Open
Ambient thermistor
circuit open.
Check connection. Replace
if necessary.
Zone T
Short
Zone thermistor
circuit shorted.
Check connection. Replace
if necessary.
Evap T
Short
Evaporator
thermistor circuit
shorted.
Check connection. Replace
if necessary.
Amb
Thrm
Short
Ambient thermistor
circuit shorted.
Check connection. Replace
if necessary.
Temp Hi
6H+
Zone temperature
+10° over set point
for over 6 hours.
Check compressor,
evaporator fan and related
relays and DC outputs.
Temp Hi
12H+
Zone temperature
+10° over set point
for over 12 hours.
Check compressor,
evaporator fan and related
relays and DC outputs.
Temp Lo
6H+
Zone temperature -
10° under set point
for over 6 hours.
Check compressor,
evaporator fan and related
relays and DC outputs.
Temp Lo
12H+
Zone temperature -
10° under set point
for over 12 hours.
Check compressor,
evaporator fan and related
relays and DC outputs.
Door
Open 5M
Door switch open for
more then 5 minutes.
Check reed switch and
connection.
ID
Description
Status
Mull
Mullion Heater
Not Used
Cond
Condenser Fan
Not Used
Def
Defrost Valve
Not Used
LVLV
Left Valve
Not Used
RVLV
Right Valve
Not Used
Pan
Pan Heater
Not Used
Comp
Compressor
Used
Up
Select
Down
RETURN TO MENU
RELAY STATUS
MULL COND DEF LVLV
OFF OFF OFF OFF
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