Test Mode - Pfannenberg DTT 6401 Serie Instrucciones De Servicio

ENG
5.5

Test mode

DANGER
Danger of fatal injury due to electric shock!
Condensate may form increasingly on the cooling unit when the switch cabinet door is open and during extended test
operation.
This may lead to an electrical hazard in the vicinity of live parts.
• The test mode may only be activated by authorized specialists with electrical training.
• The unit may only be operated in test mode under supervision.
The test mode triggers the cooling unit to commence unconditional cooling for 90 s.
This means that the internal and external fans as well as the compressor are switched on. Errors and alarms have priority, but
the "door contact open" error is ignored.
Normal operation is automatically resumed after 90 s.
Requirements
• The cooling unit is ready for operation.
• The LED light of the control unit lights green.
Procedure
1. Press the Back + Set buttons simultaneously for at least 5 s.
• Fans and compressors start up.
2. The countdown timer is shown in the display (alternating with the ACTUAL temperature):
The test mode is active. The cooling unit resumes normal operation after 90 s. If the Back + Set button combination is

pressed again during the countdown, the test mode starts again with the countdown of 90 seconds.
The test mode may be started as often as necessary.
Operating Manual | Roof-mounted Cooling Unit | Multi Controller (MC) – 115 V | 086100029c 56/57