Troubleshooting - Bühler technologies Nivotemp NT M-XP Guía Rápida

Nivotemp NT M-XP
7 Service and Repair
Please refer to the original operator's manual on the included
CD or online at www.buehler-technologies.com for a detailed
description of the unit including information on
troubleshooting and repair.

7.1 Troubleshooting

Problem / Possible cause
Malfunction
No display • No supply
voltage
Error messages on the display:
Alternating between Err and Exxx: e.g.
Error 001 • Ambient
temperature
too low
• Ambient
Error 002 temperature
too high
Error 004 • Pt100 defect-
ive (short-cir-
cuit)
• Pt100 defect-
Error 008 ive (cable
break)
Error 016 • Defective
reed-contact
(short-circuit)
• Defective
reed-contact
Error 032
(supply line
open)
Error 1024 • Second plug
has no supply
voltage
• Internal error
10 Bühler Technologies GmbH
Possible errors
Malfunction
Switching out-
put not trig-
gering when
exceeding lim-
Action
its
• Check cable and
replace, if neces-
sary
Switching out-
put constantly
⇔
switching
• Maintain limits
• Maintain limits
• Send device in for
The analogue
repair
doesn't re-
ceive the full/
correct output
• Send device in for
current
repair
• Send device in for
repair
Analogue out-
put doesn't
• Send device in for
change the
repair
output signal
when the in-
• Check the supply put signal
voltage for the changes
second plug.
• Be sure to switch
on or plug in the
power supply for
the second plug
before or shortly
after the first.
• Please contact
customer service
Problem / Possible cause
• Switching output
configured incor-
rectly
• Switching output
defect
• Switching output
configured incor-
rectly
• Switching output defect
• Wrong signal type
set
• Load too high
(current output)
• Analogue output
configured incor-
rectly
Action
• In submenu Coux:
"Test Switching
Output" to ensure
normal mode
• In submenu Coux:
"Test Switching
Output" to test the
desired switching
output
• In submenu Coux:
"Test Switching
Output" to ensure
normal mode
• In submenu Coux:
"Test Switching
Output" to test the
desired switching
output
• In submenu Aoux:
Check and if neces-
sary set the correct
signal type (cur-
rent/voltage out-
put)
• Reduce load to per-
missible value
• In submenu CAnx:
„Test Analogue
Output" to ensure
normal mode
BX100023 ◦ 12/2017