Xpelair Natural Air Series User Manual Download

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Section 4 – Fault Finding

4 Fault finding

Filter, status and fault messages are shown on the display of the control panel on the front of the unit.

If there are any active fault messages, the display will flash.

WARNING:

Repairs must only be carried out by qualified technicians.

Use only original spare parts from the manufacturer.

Code

Display

Status

Cause

Action

Replace Filters

Running

Filter maintenance
(Filter interval expired)

Check / change filter, reset the filter.

Cool Down
Protection

One fan
running

Supply fan off for frost protection
of the unit. (Extract temp. < 3°C)

Turn room heating on. Auto recovery
after 30 mins when temp. is above 3°C

Frost Protection
UNIT OFF

Off

Switch off for frost protection of
the property.
(Supply air temperature < 8°C)

Turn room heating on. Check operation
of Extract fan. Make sure Bypass is
closed. Auto. recovery after 60 mins
when supply temp. is above 9°C.

SMOKE ALARM
UNIT IS OFF

Off

External smoke detector has
activated. Check and reset.

See external Smoke detector device

Check Fireplace
Ventilation

Off

External room pressure sensor
continues to detect a pressure
fault.

Check ducting system for blockages and
fix if required.
Check correct operation of supply fans.
Reset screen message when fault cleared
(Press OK for more than 5 seconds)

None (Display is
Off)

Off

Power failure (no display, device
not running)

Switch on power supply. Check fuse.

None (Display is
Off)

Running Faulty display. Faulty connection

Replace display PCB. Check and re-
connect umbilical plug to Display PCB.

E05

E05: Ext. overload Off

Power supply breakdown, 24V DC
overload.
External controllers and sensors,
incorrect wiring, short circuit.

Check wiring of external controllers and
sensors

E11

E11 Supply Start

Off

Faulty Supply fan ventilator /
supply air does not start *
No Supply fan speed for 30 s, cable
break, fan blocked or defective.

Check / replace connection cable / Check
replace Supply fan

E12

E12 Extract start

Off

Faulty Extract fan ventilator /
supply air does not start *
No Extract fan speed for 30 s, cable
break, fan blocked or defective.

Check / replace connection cable / Check
replace Extract fan

E21

E21 FreshAir NTC

Running

Faulty Fresh Air duct NTC

Replace Fresh Air NTC sensor

E22

E22 Supply NTC

Running

Faulty Supply Air duct NTC

Replace Supply Air NTC sensor

E23

E23 Extract NTC

Running

Faulty Extract Air duct NTC

Replace Extract Air NTC sensor

E24

E24 Exhaust NTC

Running

Faulty Exhaust Air duct NTC

Replace Exhaust Air NTC sensor

E25

E25 Humidistat

Running

Faulty Extract Humidity sensor

Replace Extract duct Humidistat sensor

Table 5.1 Messages and faults

Summary of Contents for Natural Air Series

Page 1: ...Natural Air Natural Air PH Natural Air Plus 180 and 350 Models Ventilation Unit With Heat Recovery User manual IMPORTANT In this user manual especially important notes are marked as WARNING or NOTE ...

Page 2: ...Tips for saving energy 11 Section 8 Environment and disposal 20 Section 3 Safety functions 12 3 1 Safe use with open flue devices 12 3 2 Frost protection of the unit 12 3 3 Frost protection of the Property 12 3 4 Smoke detector safety cut out 12 WARNING The unit contains rotating fans Do not put hands or fingers or any other objects into the unit or ducting WARNING THIS APPLIANCE CAN BE USED BY CH...

Page 3: ...details 1 3 Operating principle The unit is fitted with two fans using energy saving EC technology which carries out a controlled air exchange in applicable buildings Used air is drawn in to the unit as Extracted air from the rooms with the highest air humidity and odour e g bathroom and kitchen and is transferred to the outside as Exhaust air via a system of air ducts At the same time a second du...

Page 4: ...tional optional external sensors can be connected depending on the requirements of the site installation Natural Air 180 350 and Natural Air 180 350 PH Optional Internally mounted Sensor board kit required Part N 93324AA Natural Air 180 350 Plus Sensor board is fitted as standard WARNING The unit must not be used if it is damaged Disconnect the unit from the power supply and notify your installer ...

Page 5: ...uns at a higher rate SPEED 3 Boost Purge ventilation runs for a user adjustable time interval for rapid ventilation e g removal of high humidity or stale air etc Table 2 3 Operating modes The operating mode is set with the display and control panel of the ventilation unit on standard display using the and buttons 2 2 1 Automatic operation The unit is designed to operate in Automatic mode and will ...

Page 6: ...d to return the display to normal If no settings are made for 180 seconds the display returns to the Standard display 2 4 User menu The user menu is used to program the weekly timer schedule to set parameters and to view information about the status and operation of the ventilation unit Access Press and OK buttons simultaneously and keep pressed for 5 sec Fig 2 5 User menu NOTE Press the button fo...

Page 7: ... Automatic This will return the unit to its normal Automatic mode Speed 1 Use this speed for normal continuous ventilation Speed 2 Use this speed to clear higher levels of humidity such as from using a shower Speed 3 Use this to provide a short time purge of the building Off Use this to switch the ventilation Off Under normal circumstances Off should not be used None Use this if no change is requi...

Page 8: ...er failures or when the unit is switched off Option Setup Summer Bypass Select then press OK The heat recovery feature is automatically turned off in the summer months by the opening of a summer bypass shutter inside the unit When the summer bypass is open the cooler outside air is supplied directly into the property without being heated up by the extracted warm air Press OK to show Bypass Enable ...

Page 9: ...Never i e the backlight is always On Use the OK and or buttons to select a new Backlight Timeout time Adjustment is 15 secs to 10 mins Press OK to select the option required 2 4 3 User Information Use the and keys to select then press OK Using this menu you can display a wide range of information about the operation and status of the unit Settings cannot be adjusted in this menu Fig 2 8 User Menu ...

Page 10: ... of the extract air ventilator Option External Humidity Sensors When an externally wired humidistat is fitted its current humidity level RH can be displayed Up to 3 sensors can be remotely wired on the 180 range and up to 7 on the 350 range Option Other External Sensors When fitted the current level of other external sensors can be displayed CO2 sensor ppm AQS Sensor 1 ppm AQS Sensor 2 ppm Smoke A...

Page 11: ...mproves the energy efficiency of the building The unit should not be switched off even if the building is unoccupied for long periods of time 2 5 1 Windows The windows of the property can be opened and closed at any time e g For natural ventilation However especially in low outdoor temperatures windows should be kept shut in order to make full use of heat recovery by the ventilation unit 2 5 2 Fil...

Page 12: ...nit will switch back on again after 15 or 30 minutes depending on the room temperature It will remain Off if the extracted air is still less than 3 C 3 3 Frost protection of property Display shows Frost Protection UNIT OFF Protects property from frost damage If the Supply air temperature drops below 8 C the whole unit will automatically switch off in order to protect the property from frost damage...

Page 13: ... supply fans Reset screen message when fault cleared Press OK for more than 5 seconds None Display is Off Off Power failure no display device not running Switch on power supply Check fuse None Display is Off Running Faulty display Faulty connection Replace display PCB Check and re connect umbilical plug to Display PCB E05 E05 Ext overload Off Power supply breakdown 24V DC overload External control...

Page 14: ...e of the fresh air and exhaust air filters can be carried out without the use of any tools Note down the date of the filter change Reset After filter maintenance reset the filter message and interval counter by selecting Filters changed Yes and pressing the OK button NOTE The unit must not be used without filters Without filters the unit performance will quickly degrade and the heat exchanger will...

Page 15: ... 5 2a Access to the 180 units Heat Exchanger Fig 5 2b Removing the 180 units Heat Exchanger Fig 5 2c Access to the 350 units Heat Exchanger Fig 5 2d Removing the 350 units Heat Exchanger A Disconnect the unit from the power and remove the front cover screws 1 and then the front cover 2 B Carefully remove the umbilical connector 3 from the back of the Display PCB C Pull out the EPP cover 4 and then...

Page 16: ... all installed traps must be checked regularly and must be cleaned if necessary Checking and cleaning should be carried out by a qualified technician Fig 5 4a 180 units Condensate discharge lines Fig 5 4b 350 units Condensate discharge lines WARNING A faulty condensate discharge can cause faults on the unit and can also lead to water damage 16 ...

Page 17: ...times and operating modes as programmed using User menu Set the Timers and Clock Program Monday Tuesday Wednesday Thursday Friday Saturday Sunday Time 1 Time Mode Time 2 Time Mode Time 3 Time Mode Time 4 Time Mode Time 5 Time Mode Time 6 Time Mode Time 7 Time Mode Time 8 Time Mode Time 9 Time Mode 17 ...

Page 18: ... Changed Date Checked Changed Date Checked Changed Date Checked Changed Date Checked Changed Date Checked Changed Date Checked Changed Date Checked Changed Date Checked Changed Date Checked Changed Date Checked Changed Date Checked Changed Date Checked Changed Date Checked Changed Date Checked Changed Date Checked Changed Date Checked Changed Date Checked Changed Date Checked Changed Date Checked ...

Page 19: ... units 42275SK External wired remote operation kit 93329AA Heater PCBs bracket 180 units 42284SK External Speed change timer switch 93343AA Display button PCB 42276SK Internally mounted Sensor Board kit 93324AA Display PCB face plate and buttons 42277SK Mounting bracket is required when fitting the Pre heater and or Boost heater PCBs Duct spigot 180 units 42303SK Table 6 1 Spare Parts Table 6 2 Ac...

Page 20: ...uring transport The transport packaging consists of recyclable raw materials Please ensure to dispose of it in an environmentally responsible way Disposal of the device Devices marked with this symbol must not be disposed of as normal residual waste The device must be collected separately including accessories empty batteries and rechargeable batteries The disposal must be correct and in accordanc...

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