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TROUBLE
o No Display
when
touching
the keys
PROBABLE CAUSE
SOLUTION
Batteries
are depleted
For 24 VAC connected
thermostat,
the RH!RC
or C
cable
may be disconnected.
Furnance
turned
off.
_/Replace
the batteries
_/Check
the connections
and correct
them
_/Turn the HVAC
system back on.
. Low battery icon is
_ Battery level low
_/Replace the batteries
ON
"No
Assurelink
icon
displayed,
or can't
control
the thermo-
stat through
the
smart
phone App
• Filter icon is ON
" Room temperature
showing
H or L
instead
of digits
"Can't
use the touch
keys when the home
screen is showing
Can't
connect
to cloud server
RF signal can't
reach the
thermostat
•- Filter life expired
The HVAC
system may
turn OFF under an
extreme
high or low
temperature
environ-
ment.
The unit has been set to
Key-Lock
The mode
of operation
is not selected
according
to the season. For
example,
selecting
Heat
mode in summer.
°The HVAC
system
stopped
regulating
the temperature
with the set point
_/Check
the Gateway
Ethernet
connection
_/Check
the availability
of Internet
access
_/Move
the Gateway
closer to the thermostat
,J Change
filter then reset the filter
counter.
Refer to the Filter section under
Feature/Operation.
_/Turn ON the HVAC
system with the thermostat
and wait
for about
15-30 minutes;
it should
display
the room temperature
again.
If the
environment
temperature
is not normal,
call for
service
for your HVAC
system.
_/To release the Key-Lock,
press Up and Down
together
for about
2-3 seconds. To activate
the Key-Lock,
press Up and Down together
for about
2-3 seconds.
_/Manually
change
the operating
mode
by
pressing
System
button.
You can also select
Auto
so the thermostat
will determine
for you
the mode of operation
automatically.
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