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13 

 

4 .   F a u l t s ,   e r r o r s   a n d   t r o u b l e s h o o t i n g  

4.1. 

Description of fault messages and their causes 

Fault 

Description 

Possible cause 

Troubleshooting 

The equipment 

cannot be started 

  The equipment 

remains idle even 

after the required 

performance level 

was selected 

  Power supply is not connected 

  Connect the equipment to power 

supply (switch on upstream 

safety circuit breakers) 

  Not found 

 

Disconnect from power 

supply

 and contact a service 

technician  

The equipment is 

not supplying 

enough air 

  The equipment is 

providing a 

significantly lower 

volume of air 

  Blocked filter 

 

Disconnect the equipment 

from power supply

  

  Replace the filter cloth or 

cassette  

  If the equipment has been in 

operation for more than approx. 

4 years, clean the heat recovery 

exchanger/s  

  A mechanical obstacle at fresh 

air suction or supply air outlets 

  Check whether the suction 

openings of fresh air or supply 

air outlets are not mechanically 

covered 

  Remove any obstacles  

  Visually and by listening check 

whether the dampers open 

properly 

  Not found 

 

Disconnect from power 

supply

 and contact a service 

technician  

The equipment is 

not heating or is 

heating 

insufficiently  

  When the heater 

has been started, 

supply air 

continues to be 

cold 

 

  The electric heater is not 

connected to power supply 

  Connect the equipment to power 

supply (switch on upstream 

safety circuit breakers) – can 

only be done by an authorized 

person  

  Response of the electric 

heater’s heat protection 

  Wait to see if the fault does not 

sort itself out after approx. 1 

hour  

  Low maximum capacity of the 

heater 

  Does not constitute a fault 

(insufficient capacity designed) 

  Not found 

 

Disconnect from power 

supply

 and contact a service 

technician  

Water is dripping 

from the 

equipment 

  Water droplets 

form between the 

door and body of 

the equipment 

during operation 

  The condensate drain siphon is 

insufficiently flooded 

 

Disconnect the equipment 

from power supply

 and flood 

the condensate drain siphon 

  The condensate drain is blocked 

with dirt 

 

Disconnect the equipment 

from power supply

 and clean 

the condensate drain including 

the siphon 

  The seal groove is damaged 

(the fault can be accompanied 

by a whistling sound caused by 

air flowing through the gap) 

 

Disconnect the equipment 

from power supply

 and replace 

the seal 

  Water droplets 

form at the 

condensate drain 

connection point 

  The condensate drain seal or 

line is damaged 

 

Disconnect the equipment 

from power supply and 

re-seal 

the condensate drain 

 

  Not found 

 

Disconnect from power 

supply

 and contact a service 

technician  

Summary of Contents for DUPLEX 250 Easy

Page 1: ...DUPLEX 250 300 400 Easy Use maintenance and installation manual Version 08 EN Issue 22 04 2014 Code R_19_01_V08_EN_2014_04 ...

Page 2: ... G4 F7 filter cloth replacement 10 3 3 Cleaning the plastic heat recovery exchanger 11 3 4 Cleaning the CPA controller 12 3 5 Other miscellaneous maintenance 12 4 Faults errors and troubleshooting 13 4 1 Description of fault messages and their causes 13 5 Equipment installation and commissioning 14 6 Equipment installation and commissioning 14 6 1 Package content 14 6 2 Key dimensions of the equip...

Page 3: ...t room temperature and operating mode Alerts to the need for air filter replacement Display 1 Time 2 Alerts e g the need for filter replacement 3 Date 4 Current room temperature 5 Air reheating indication if the system includes a reheater 6 Ventilation capacity setting in 7 Selected operating mode Description of controls Short press general controls and parameter settings Long press 3 s of the ven...

Page 4: ...y with the capacity set at outside temperatures as follows Above approx 5 C to approx 25 m3 h person i e for 4 persons 100 m3 h with 70 m3 h set at night Below approx 5 C to approx 20 m3 h person i e for 4 persons 80 m3 h with 50 m3 h set at night Weekly program a general ventilation mode with a required rate of ventilation provided by the unit according to schedule parameters Automatic mode the c...

Page 5: ...ne parameter is shown in the menu you can switch between these by a short press a parameter can be set by pressing and repeatedly setting can be faster if you press and hold the symbol 2 3 3 Menu PROGRAM weekly program Setting a weekly program time schedule for ventilation capacity Setting a weekly program for starting air reheat Changes made in a weekly program for a selected period of Mon Sun Mo...

Page 6: ...eration is indicated in the basic menu by symbols and Note Air reheating with an electric heater is only possible with a minimum ventilation capacity of 30 due to a sufficient air flow rate for cooling the heating elements 2 4 User system settings Using directional arrows you can move between individual user menus MODE VENTILATION REHEAT FILTER TIME SETTINGS By pressing OK in the SETTINGS menu oth...

Page 7: ...10 100 with input DI1 closed Setting a function s start delay time in a range of 0 300 s in 10 second steps Setting a function s run down time in a range of 0 300 s in 10 second steps If a button is used the start delay time must be set to 0 s in order for the short press of the button to be accepted and the run down time must be set to a non zero value 2 4 5 SENSOR menu analogue input IN1 Setting...

Page 8: ...ernal air temperature in a range of 3 C in 0 5 C steps 2 4 8 DISPLAY menu Setting the display brightness and contrast recommended values are 70 and 50 2 4 9 LANGUAGE menu Setting the menu language Note If the controller has been disconnected from power supply for more than 48 hours the language is automatically set to English when switched on again 2 4 10 Automatic ventilation modes If there is a ...

Page 9: ... front panel with display Now it is possible to replace the CR1632 battery and put the two parts of the controller back together After turning it on it is necessary to set the correct time and date 2 4 13 Supply air reheat mode Only external EPO PTC series duct electric air heaters fitted with their own thermostat to set air temperature downstream the heater can be connected to the equipment Up to...

Page 10: ...aximum ventilation capacity levels a full range of 0 100 is set by the manufacturer Description 1 Setting of min ventilation capacity 2 Setting of max ventilation capacity 3 E qui pm e nt m a i nt e na nc e by t he us e r 3 1 Basic instructions filter replacement maintenance and cleaning Maintenance involves visually checking the equipment regularly replacing filters and cleaning the heat recovery...

Page 11: ...rom one side to another Press the cover into the unit s enclosure so that it is flush with the lid s edge along the entire perimeter 3 3 Cleaning the plastic heat recovery exchanger The recommended interval of heat recovery exchanger cleaning is about 2 years depending on the nature of the operating environment If necessary wash the heat recovery exchanger block with warm water with a detergent se...

Page 12: ...icating only the seal with silicon oil for easy sliding and increasing the flexibility and life span of the seal 3 4 Cleaning the CPA controller The CPA controller requires the same maintenance as the lighting switch cleaning is only possible using a dry cloth no water may enter the inside of the controller Liquids which might damage its surface must not be used for its cleaning e g organic solven...

Page 13: ...the heater has been started supply air continues to be cold The electric heater is not connected to power supply Connect the equipment to power supply switch on upstream safety circuit breakers can only be done by an authorized person Response of the electric heater s heat protection Wait to see if the fault does not sort itself out after approx 1 hour Low maximum capacity of the heater Does not c...

Page 14: ...uring transport the equipment must be protected against any falls mechanical damage water leaks and any other adverse effects that could damage the equipment or its packaging 6 E qui pm e nt i ns t a l l a t i on a nd c om m i s s i oni ng 6 1 Package content The basic package of DUPLEX Easy units contains the following accessories The operation maintenance and installation manual An abridged cont...

Page 15: ...GEND e1 Fresh air supply from the outside e2 Supply of air after heat recovery to the interior i1 Exhaust air extraction from the interior i2 Exhaust air discharge into the atmosphere K Condensate drain Installati on position View Configuration of ports and condensate drain positions Under ceiling PODSTROPNÍ PODLAHOVÁ PARAPETNÍ K K K K K K K K Floor standing PODSTROPNÍ PODLAHOVÁ PARAPETNÍ K K K K ...

Page 16: ...the elements supplied and a threaded rod and an anchor The threaded rod and the is not included Anchoring points DUPLEX 250 Easy DUPLEX 300 Easy DUPLEX 400 Easy 618 4xO9 280 805 4xO9 805 775 280 618 4xO9 80 Anchoring detailed view 3 2 1 4 5 6 7 délka závitové tyče 230 délka kotvení 1 DUPLEX Easy unit 2 Threaded rod M8 NOT INCLUDED 3 Wall ceiling anchor NOT INCLUDED 4 DIN 9021 M8 washer INCLUDED 5 ...

Page 17: ...e distribution silencer with sound dampening insulation Recommended distances min 250 min 75 min 350 min 350 6 6 Fitting the condensate drain The unit must have a condensate drain fitted in exhaust air outlet section i2 see paragraph 6 3 Condensate drains not in use must remain sealed The condensate drain line must be connected so that it does not get damaged during handling the unit In under ceil...

Page 18: ...eedn t be cut out just push out the plug being pushed out Fitting the bushing into the unit s enclosure Fitting The point designed to fit the condensate drain with accessories Push out the middle part of the hole using just your finger the hole below the outlines of the smaller hole Remove the plug Insert the bushing with the flange on the inside of the unit Put on a washer from the other side and...

Page 19: ... permanently flooded After the unit has been out of operation it is necessary to check the siphon for flooding and free passage before re commissioning the unit Siphon arrangement on a flexible hose Detailed view of securing the siphon with a plastic clip DUPLEX EASY under ceiling DUPLEX EASY floor standing DUPLEX EASY floor standing flat ...

Page 20: ...cover and the unit Tighten four screws for attaching the lid and upper part of the unit SK cover 6 11 Filter types The basic version of the equipment is supplied with a Class G4 filter cloth in a stainless frame with a Class F7 cloth available as an optional extra 6 12 Installing optional accessories The following external pre heaters or reheaters can be connected to the unit An EPO PTC external a...

Page 21: ...troller CPA Installation on the wall 7 2 Permanent disballancing of supply and exhaust fans The unit it must be disconnected from power supply before any intervention with Use the MX terminal block mounted on terminals inside the unit under the hood blue accessory on terminals Me and Mi to disballance performance of Mi exhaust and Me supply fans The disballance can be a maximum of 30 Turn adjustme...

Page 22: ...out the air filters Unscrew sensor T1 from its original position Pull it out of the terminals red Put the sensor in its new position Screw it into the guide Insert it into the terminals either polarity Unscrew sensor T2 from its original position Pull it out of the terminals blue Unscrew the screw from the fan Put the sensor in its new position Screw sensor T2 on Insert it into the terminals eithe...

Page 23: ...23 7 4 Wiring diagram ...

Page 24: ... between 25 C and 45 C and relative air humidity up to 70 in an environment where there is no risk of fire or explosion of flammable gases and fumes not containing organic solvents or aggressive substances that might damage the mechanical parts of the equipment If there is a danger of such gases and fumes temporarily entering the duct system e g floor bonding painting the equipment must be switche...

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