10
RHT30_TH30
‐
en
‐
GB_V1.0
(11/16)
Maintenance
Battery
Replacement
The
battery
compartment
is
located
on
the
back
of
the
datalogger
as
shown
in
the
Descriptions
section.
When
the
battery
symbol
flashes
on
the
display,
replace
the
batteries
promptly.
1.
Using
a
large
coin,
rotate
the
battery
compartment
lid
clockwise
approximately
one
quarter
turn
to
open
the
compartment
2.
Replace
the
two
(2)
CR2032
batteries
with
positive
(+)
side
facing
up
3.
Replace
the
battery
compartment
lid
and
turn
counterclockwise
to
secure
it
4.
Dispose
of
batteries
in
accordance
with
country,
state,
and
local
regulations
Never
dispose
of
used
batteries
or
rechargeable
batteries
in
household
waste.
As
consumers,
users
are
legally
required
to
take
used
batteries
to
appropriate
collection
sites,
the
retail
store
where
the
batteries
were
purchased,
or
wherever
batteries
are
sold.
Disposal:
Do
not
dispose
of
this
instrument
in
household
waste.
The
user
is
obligated
to
take
end
‐
of
‐
life
devices
to
a
designated
collection
point
for
the
disposal
of
electrical
and
electronic
equipment.
Battery
Status
Check
To
check
the
approximate
number
of
days
of
battery
life
remaining,
short
press
the
MARK
button.
The
display
will
show
the
number
of
days
and
the
‘d’
for
days
(XXd).
Cleaning
Wipe
the
datalogger
with
a
damp
cloth,
do
not
use
solvents
or
abrasives
as
these
may
damage
the
datalogger
finish
and
display
lens.
Error
Display
Codes
ERROR
CAUSE
SOLUTION
Dashes
‐ ‐ ‐ ‐ ‐
.
‐
External
probe
unplugged
(TH30
only)
Check
the
connection
between
the
external
probe
and
logger
E02
Measured
value
below
specified
range
Operate
in
the
specified
range
E03
Measured
value
above
specified
range
Operate
in
the
specified
range
E04
Temperature
error
(RHT30
only)
Contact
Extech
for
service
E11
Humidity
check
failed
(RHT30
only)
Contact
Extech
for
service
E31
Microprocessor
failed
Contact
Extech
for
service
E33
Humidity
measurement
error
Contact
Extech
for
service
www.calcert.com
1.888.610.7664
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