Pfannenberg Units With Standard Controller; Warranty Conditions - Pfannenberg DTS Serie Instrucciones De La Instalación Y Del Uso

13.3

Pfannenberg units with standard 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: OFF
Internal fan: OFF
External fan: OFF
Status LED: OFF
Fault signal contact: open
2 Compressor: ON
Internal fan: ON
External fan: ON
Status LED: flashing (seq.
open
Fault signal contact:
3
Compressor: OFF
Internal fan: OFF
External fan: ON
Status LED: flashing (seq.
Fault signal contact: closed
Compressor: OFF
4
Internal fan: ON
External fan: OFF
Status LED: flashing (seq.
Fault signal contact: open
Compressor: OFF
5
Internal fan: OFF
External fan: OFF
Status LED: flashing (seq.
Fault signal contact: open
Compressor: ON
6
Internal fan: ON
External fan: ON
Status LED: flashing (seq.
Fault signal contact: open
Compressor: ON
7
Internal fan: ON
External fan: ON
Status LED: flashing (seq.
Fault signal contact: open
8 Compressor: normal control
Internal fan: ON
External fan: normal control
Status LED: flashing (seq.
Fault signal contact: open
* 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.
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;
• if parts are replaced by non-genuine parts.
16
Technical causes
There is no supply of voltage to the unit.
The test mode of the unit is active. This
mode is left automatically at the latest
after 60 s.
3)
The input for the door limit switch is open
e.g. as a result of a switch cabinet door
not closed or a bridge not set.
1)
High pressure pressostat or motor
protection switch has responded
(overheating). Compressor switches on
2) again automatically after the fault has
been remedied (cooling) with a delay of
30 s.
Unit adjustment by means of the coding
switch on the control electronics is not
plausible. The unit setting must be
1) changed.
The upper temperature limit (T
switch cabinet has been exceeded.
1)
The temperature sensor TS1 is defective
or has not been detected.
2)
There is an air short circuit* in the switch
panel, i.e. effective cooling of the switch
panel is not possible. Air-conditioning is
requested within short cycle times.
1)
In order to maintain your warranty rights please observe the
following when returning the unit:
•
•
•
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.
) of the Clean filter mat or heat exchanger in the
L2
external circulation. Possibly check the
power dissipation in the switch cabinet to
the installed cooling capacity of the air
conditioner.
Replace temperature sensor TS1 or re-
place 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 a
side-mounting cooling unit as an alterna-
tive depending on the space situation.
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
085 408 065f