Pfannenberg Units With Standard- Or Comfort-Controller; Warranty Conditions - Pfannenberg DTD series Betriebs- Und Montageanleitung

13.3 Pfannenberg units with Standard- or Comfort-Controller

The following table describes the technical cause as well as the fault remedy as a function of the unit characteristics.
Pos Unit characteristics
1
Compressor:
Internal fan:
External fan:
Status LED:
Fault signal contact:
2 Compressor:
Internal fan:
External fan:
Status LED:
ult signal contact:
3 Compressor:
Internal fan:
External fan:
Status LED:
Fault signal contact:
Compressor:
4
Internal fan:
External fan:
Status LED:
Fault signal contact:
Compressor:
5
Internal fan:
External fan:
Status LED:
Fault signal contact:
Compressor:
6
Internal fan:
External fan:
Status LED:
Fault signal contact:
Compressor:
7
Internal fan:
External fan:
Status LED:
Fault signal contact:
Compressor:
8
Internal fan:
External fan:
Status LED:
Fault signal contact:
Compressor:
9
Internal fan:
External fan:
Status LED:
Fault signal contact:
* Air short-circuit: An air short-circuit develops, if cool air at the air outlet of the cooling unit is led by means of power components built directly in front of
it in an unfavourable way, not into the switch cabinet, but directly to the air inlet of the cooling unit. The consequence is overheating of the power components
due to the lack of cooling.
When using a unit with Multi-Controller, the fault indication is given in the form of an error code on the control unit display. To classify
the error code, refer to the „Operating Instructions Pfannenberg Multi-Controller" provided with the documentation for the unit.

14 Warranty Conditions

Warranty becomes null and void:
• in case of improper usage of the unit, noncompliance with ope-
rating conditions or nonobservance of instructions;
• If operated in rooms in which corrosives or acids are present
in the atmosphere;
• in case of damage caused by contaminated or jammed air filters;
• if a non-authorised person interrupts the cooling circulation,
modifies the unit or changes the serial number;
• in case of damage caused by transport or by accidents;
16
OFF There is no supply of voltage to the unit.
OFF
OFF
OFF
open
ON The test mode of the unit is active. This
ON mode is left automatically at the latest
ON after 60 s.
flashing (seq. 3)
open
OFF The input for the door limit switch is open
OFF e.g. as a result of a switch cabinet door
OFF not closed or a bridge not set.
flashing (seq. 1)
closed
OFF High pressure pressostat or motor
ON protection switch has responded
ON (overheating). Compressor switches on
flashing (seq. 2) again automatically after the fault has
open been remedied (cooling) with a delay of
30 s.
OFF Unit adjustment by means of the coding
OFF switch on the control electronics is not
OFF plausible. The unit setting must be
flashing (seq. 1) changed.
open
ON The upper temperature limit (T
ON switch cabinet has been exceeded.
ON
flashing (seq. 1)
open
OFF
The lower temperature limit of the switch
ON
cabinet has been exceeded
OFF
or
flashing (seq. 1)
the water level in the condensate collection
open
pan is too high (only with optional level
monitoring).
These faults can only occur with the Comfort-
Controller.
ON
The temperature sensor TS1 is defective
ON
or has not been detected.
ON
flashing (seq. 2)
open
normal control
In the switch cabinet, if a short circuit in
characteristics
the air circuit* occurs, no effective cooling
ON
of the switch cabinet is possible.
normal control
Air-conditioning is requested within short
characteristics
cycle times.
flashing (seq. 1)
open
Technical causes
) of the
L2
– if parts are replaced by non-genuine parts.
In order to maintain your warranty rights please observe the
following when returning the unit:
• Enclose an exact description of the fault in the shipping pa-
ckage.
• Enclose proof of delivery (delivery note or copy of invoice).
• Return the unit together with all accessories; use the original
packaging or packaging of equivalent quality, send the unit frei-
ght prepaid and covered by an adequate transport insurance.
Observe the hints on transport mentioned in section 2.
Fault remedy
Check back-up fuse and/or connect
supply voltage
The unit switches to test mode once after
each new connection to the power supply.
No remedy of fault necessary.
Insert link, close door contact switch or,
with an engaged door contact switch,
close the door
Clean filter mat or heat exchanger in the
external circulation. Possibly check the
power dissipation in the switch cabinet to
the installed cooling capacity of the air
conditioner.
Observe the operating instructions and
note the coding key of the coding switch.
CClean filter mat or heat exchanger in
the external circulation. Possibly check
the power dissipation in the switch cabinet
to the installed cooling capacity of the air
conditioner.
Additionally install a heater or a fan-
forced heater if necessary.
Check drain for blockage or fouling.
Check for correct installation of the run-
off tube. Note that particularly much
condensate is produced if the switch
cabinet is poorly sealed or the doors are
constantly open.
Replace the contact sensor TS1 or
replace the complete electronic control
with a fixed-wired temperature sensor
Get in touch with the service department.
Relocate the power components in the
switch cabinet or relocate the cooling unit.
Select a top-mounting cooling unit or side-
mounting cooling unit as an alternative
depending on the space situation.
085 408 067