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MK / MKT (E5) 08/2020 page 119/162
Fault description
Possible cause
Required measures
Heating (continued)
Over-/under temperature safety
device class 2 (option) responds.
Limit temperature reached.
Acknowledge the alarm on the con-
troller. Disconnect the chamber from
the power supply and let it cool
down. Detect cause and remove it.
Press button “RESET CL 2.0” (2).
Start up the chamber and check
control functions. If appropriate, se-
lect suitable limit value.
Refrigerating performance
No or low refrigerating perfor-
mance.
Ambient temperature > 25 °C
/
77°F (chap. 3.4).
Select cooler place of installation.
Compressor not turned on.
Contact BINDER service.
Electro-valves defective.
No or not enough refrigerant.
No refrigerating performance; no-
tification “Preheat phase” on the
controller display.
MK 56: Main power switch (1)
turned on less than 1 hour be-
fore operating the chamber.
Turn on the main power switch (1)
at least one hour before operating
the chamber.
MK / MKT 115, 240, 720:
Main power switch (1) and/or
rear power switch (12) turned
on less than 1 hour before op-
erating the chamber.
Turn on the main power switch (1)
and/or the rear power switch (12) at
least one hour before operating the
chamber.
Condensation
Condensation at the samples.
Heating-up phase without anti-
condensation protection.
Use the anti-condensation protec-
tion (chap. 18).
Condensation or icing at the
sides of the inner chamber.
Set-point for a long time below
ambient temperature, icing in
the preheating chamber.
Defrost the chamber.
Condensation at the samples or
at the sides of the inner chamber;
notification “Preheat phase” on
the controller display.
MK 56: Main power switch (1)
turned on less than 1 hour be-
fore operating the chamber.
Turn on the main power switch (1)
at least one hour before operating
the chamber.
MK / MKT 115, 240, 720:
Main power switch (1) and/or
rear power switch (12) turned
on less than 1 hour before op-
erating the chamber.
Turn on the main power switch (1)
and/or the rear power switch (12) at
least one hour before operating the
chamber.
Controller
No chamber function
(dark display).
Display in standby mode.
Press on touchscreen.
Main power switch (1) not
turned on
Turn on the main power switch (1).
MK/MKT 115, 240, 720: Rear
power switch (12) not turned
on.
Turn on the rear power switch (12).
Menu functions not available.
Menu functions not available
with current authorization
level.
Log in with the required higher au-
thorization or contact BINDER ser-
vice to obtain an activation code.
No access to controller
Password incorrect.
Contact BINDER service.
Chart recorder function: meas-
ured-value memory cleared, in-
formation lost.
New setting of storage rate or
scaling (minimum and/or max-
imum) (chap. 16.2).
Change the storage rate or scaling
ONLY if the previously registered
data are no longer required.
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