Zehnder Rittling Comfoair 140 Manual Download

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8. MALFUNCTIONS

8.1 Troubleshooting

Chart – COMFOAIR 140

Fault/malfunction Symptom

Display

Check

Bypass rotates

Bypass

Filter clogged

FiltEr/A1

Filter

Bypass

Intake air PTC thermistor

Exhaust air PTC thermistor

None

Bypass does not
rotate

Discharged air PTC thermistor

“Intake

air”

button

Fuse on pcb defective

Voltage connected

Control pcb defective

All OFF

No voltage

Failure of mains voltage

3-position

switch

High air delivery
temperature in summer

Bypass remains
closed

Bypass Comfort
temperature

Intake air PTC thermistor

Exhaust air PTC thermistor

A5 Malfunction

outside

temperature PTC thermistor

A7 Malfunction

post-heater

temperature PTC thermistor

Bypass

Low air delivery
temperature in winter

Bypass remains
open

Discharged air PTC thermistor

Comfort

temperature

E2 Fan

defective

Fan power pack defective

Control

pcb

Fan not running

E3 PTC

thermistor

Filter clogged

Valves clogged

Heat exchanger clogged by
soiling

Heat exchanger iced

- Deviation in PTC thermistor

- Control pcb

Fan soiled

Ducts clogged

Air intake fan speed reduced
due to frost risk

No or insufficient intake
air

Fan running

Air intake fan is switched off
due to extreme frost risk

Summary of Contents for Comfoair 140

Page 1: ...Comfoair 140 Manual ...

Page 2: ...2 TRANSPORT AND PACKAGING 8 4 3 INSTALLATION 8 4 4 COMPONENT OVERVIEW 10 4 5 ELECTRICAL CONNECTION 11 5 COMMISSIONING 12 5 1 OPERATING PANEL 12 5 2 PROGRAMMING EXAMPLE 14 5 3 SETTING PARAMETERS 14 6 SETTING 17 7 MAINTENANCE CARE 18 7 1 GENERAL 18 7 2 FILTER CHANGING 18 8 MALFUNCTIONS 19 8 1 TROUBLESHOOTING CHART COMFOAIR 140 19 8 2 BYPASS INSPECTION INSTRUCTIONS 21 9 END OF LIFE PROVISIONS 21 10 A...

Page 3: ... parts were not used or unauthorised modifications were made to the unit 1 2 Liability The Comfoair 140 ventilation unit was designed for comfortable ventilation in residential buildings Use in any other way is considered as being an unauthorised use that can result in damage to the unit and or injury to persons for which the manufacturer cannot be held responsible The manufacturer assumes no liab...

Page 4: ...em we recommend that you conclude a service contract with an approved specialist company 2 3 Intended Use The Comfoair 140 is intended for the extraction of polluted room air and the supply of warmed or cooled fresh outside air Use in any other way is considered to be contrary to the intended use The manufacturer declines any responsibility for damage injury or other consequences resulting from su...

Page 5: ...110 Pa 0 81 A Maximum 0 88 A Power factor cos phi 0 95 0 99 Noise level Lo 10 12W Intake air Low 100 m h at 37 Pa 55 dB A Medium 150 m h at 81 Pa 64 dB A High 225 m h at 162 Pa 72 dB A Exhaust air Low 100 m h at 37 Pa 44 dB A Medium 150 m h at 81 Pa 51 dB A High 225 m h at 162 Pa 58 dB A 3 1 1 Technical Data COMFOAIR 140 Heat exchanger efficiency approx 92 Fans Constant volumetric flow with parall...

Page 6: ...3 2 Dimensions ...

Page 7: ...nes between unit connection and outside wall roof opening must be insulated vapour diffusion tight A double walled or insulated part must be used for the roof or outside wall opening for the discharged air The Comfoair 140 must be installed in a frost free room The condensate line must be laid frost free and with a down gradient Extractor hoods may not be connected to the same system In order to e...

Page 8: ...on when transporting and unpacking the unit Damage to the packaging must be recorded on the delivery note on receipt of the goods Dispose of the packaging materials in an environmentally safe manner 4 3 Installation Wall Mounting Figure 2 Unit as right hand version ...

Page 9: ...Cover element for wall installation option Figure 3 Ceiling Mounting ...

Page 10: ...ntake filter F6 optional 4 Operating panel with display 5 Discharged air PTC thermistor 6 Condensate drain wall mounting 7 Condensate drain ceiling mounting 8 Counterflow heat exchanger 9 Air intake filter 10 Exhaust air filter 11 Installation rails 12 Cable opening for electrical connection ...

Page 11: ... is made at the terminal box inside the housing The terminals are numbered Observe the conductor designations Incorrect connection of the cables will result in damage to the electronics The bathroom switch must be connected as an off circuit two way switch or button Wiring Diagram COMFOAIR 140 with 3 position switch ...

Page 12: ...e air intake fan if windows are opened The bypass opens and has no further function If a geothermal heat exchanger GHE is used always leave the air intake fan switched on No function with this unit type Comfort temperature This button allows you to read off the set comfort temperature If you wish to change this temperature the desired temperature can be set with the buttons or Press OK to store th...

Page 13: ...y 4 First digit of code 3 5 OK 6 Second digit of code 5 7 OK 8 Third digit of code 2 9 OK P3 Ventilation levels 10 P4 Temperatures 11 P5 Status 12 P6 Malfunction register 13 P7 Reset To quit the programme press the MENU button several times until the current fan speed level is displayed If no further buttons are pressed the programme stops after 5 minutes and the current fan speed level is display...

Page 14: ...P35 12 OK 50 Current setting 13 40 Select 40 14 OK P35 Saves the value 40 15 MENU P3 16 MENU 1 2 or 3 Depending on the fan speed level 5 3 Setting Parameters P1 No function P2 Time delays Number Meaning Min Max Default Unit 21 Starting delay Level 3 floating contact 0 15 5 Min 22 Stopping delay Level 3 floating contact 0 120 30 Min P3 Fan speed levels Number Meaning Min Max Default Unit 31 Exhaust...

Page 15: ...rent value C 46 Current value of T3 exhaust air current value C 47 Current value of T4 discharged air current value C P5 Status depends on type Number Meaning 0 1 Default 51 No function 0 52 No function 0 53 No function 0 54 Bypass installed No Yes Yes 55 No function 0 With the COMFOAIR 140 parameters P51 P52 P53 and P55 must always be set to 0 and P54 always set to 1 P6 Malfunction register Numbe...

Page 16: ...eset No acknowledg ement Acknowle dgement 0 With Reset P72 P54 is set to 0 This must therefore be set to 1 again For reading out malfunctions see section 10 P8 Auxiliary frost protection control Number Meaning Min Max Default Unit 81 Frost protection safety 1 Very safe 2 Safe 3 Normal 4 Low 1 4 2 82 Thawing time in minutes Setting 0 standard frost protection control 0 240 60 Min ...

Page 17: ...rates First the intake air then the exhaust air If the values differ by more than 10 from the nominal value and most of them are in the range then set the valves grilles so that they are all in the range If the values are in the range then set the valves grilles so that they are all in the range Leave one air intake and one air outlet valve open The fan setting can then be changed at the display I...

Page 18: ...filters 7 2 Filter Changing Fig 9 1 Change the filters at least once a year To change or clean the filter loosen the 6 screws A In the case of ceiling mounted units the condensate drain must also be removed Then remove the front cover The unit is equipped as standard with an outside air filter A and an exhaust air filter B of Class G4 Pull the filters out of the unit from the front and clean using...

Page 19: ...fort temperature A3 Intake air PTC thermistor A4 Exhaust air PTC thermistor A5 Malfunction in outside temperature PTC thermistor A7 Malfunction in post heater temperature PTC thermistor Bypass Low air delivery temperature in winter Bypass remains open E3 Discharged air PTC thermistor Comfort temperature E2 Fan defective E2 Fan power pack defective Control pcb Fan not running E3 PTC thermistor Filt...

Page 20: ... running too fast No or insufficient intake exhaust air Bypass flap jammed Bypass Bypass motor defective Scraping noise Siphon does not close Whistling noise Air leaks at unit or duct system Valves grilles not open sufficiently Valves grilles not correctly connected to duct Loud noise Air flow noise Fan running too fast No or insufficient intake exhaust air Siphon is empty Drain clogged Condensati...

Page 21: ... of the last setting is available the set values can also be taken from the protocol PTC thermistor Check the thermistor and the wiring If they are OK the thermistor must be replaced See table of thermistor values Temp C 50 40 30 20 10 0 10 20 25 Ohm 515 567 624 684 747 815 886 961 1000 Temp C 30 40 50 60 70 80 90 100 Ohm 1040 1122 1209 1299 1392 1490 1591 1696 Heat exchanger Inspect the heat exch...

Page 22: ...10 ANNEXES 10 1 Electrical Circuit Diagram Comfoair 140 ...

Page 23: ...5694 Handelsregister Zwolle 22293 EC declaration of conformity Description Heat recovery unit type G90 140 Conforms the following directives Machine directive 98 37 EG Low voltage directive 73 23 EEC EMC directive 89 336 EEC 92 31 EEC and 93 68 EEC Zwolle 22 november J E Stork Ventilatoren B V E v Heuveln General manager ...

Page 24: ...systems Industriestraße 11 Almweg 34 CH 8820 Wädenswil D 77933 LAHR Phone 41 043 833 2020 Phone 49 07821 586 159 Fax 41 043 833 2021 Fax 49 07821 586 302 e mail info comfosystems com www zehnder online de info comfosystems zehnder comfosystems 849050528engels 1107 ...

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