Watlow PM LEGACY™ Limit Controller
•
105
•
Appendix
Indication
Description
Possible Cause(s)
Corrective Action
Device Error
100
rEtn
Controller displays
internal malfunction
message at power
up.
• Controller defective
• Sensor input over driven
• Replace or repair controller
• Check sensors for ground
loops, reverse wiring or out
of range values.
Menus inacces-
sible
Unable to access
sEt
,
opEr
,
fCty
menus or particular
prompts in Home
Page
• Security set to incorrect
level
• Digital input set to lockout
keypad
• Custom parameters incor-
rect
• Check
LoC
settings in Fac-
tory Page and enter appro-
priate password in
ULoC
setting in Factory Page
• Change state of digital in-
put
• Change custom parameters
in Factory Page
Function Key/s
do not work
Function Key/s do
not activate required
function
• Function Key function in-
correct
• Function Key function in-
stance not correct
• Keypad malfunction
• Verify Function Key function
in the Setup Menu
• Correct and change the
function instance if not cor-
rect
• Replace or repair controller
Displayed value
to low
uaL.L
Value to low to be
displayed in 4 digit
LED display <-1999
• Incorrect setup
• Check scaling of source
data
Displayed value
to high
uaL.h
Value to high to be
displayed in 4 digit
LED display >9999
• Incorrect setup
• Check scaling of source
data
