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Troubleshooting |

13

4.7

Overheat protection reset button

If the supply air temperature is low, it can indicate that the over heat protec-
tion is triggered. The overheat protection can be reset by pressing the reset
button.

4.8

Duct System Maintenance

4.8.1

Cleaning extract louvres and supply air diffusers

The system supplies fresh air to your home and extracts the used indoor air via the duct system and diffusers/louvres.
Diffusers and louvres are mounted in ceilings/walls in bedrooms, living room, wet rooms, WC etc. Remove diffusers
and louvres and wash in hot soapy water as required (diffusers/louvres must not be exchanged). Cleaning of diffusers/
louvres can be done as necessary.

4.8.2

Checking the outdoor air intake

Leaves and pollution could plug up the air intake grille and reduce the capacity. Check the air intake grille, and clean as
necessary. It is recommended to do this at least twice a year.

4.8.3

Checking the roof cowl (if fitted)

The roof cowl (if fitted) connected to the exhaust air duct needs to be checked at least twice a year and cleaned if
necessary.

4.8.4

Checking and cleaning the duct system

Dust and grease deposits may build up in the duct system, even if required maintenance such as changing of filters is
being carried out. This will reduce the efficiency of the installation.

The duct runs should therefore be cleaned/changed when necessary. Steel ducts can be cleaned by pulling a brush
soaked in hot soapy water through the duct via diffuser/louvre openings or special inspection hatches in the duct sys-
tem (if fitted).

It is recommended to do this every 5 years and is normally carried out by authorized companies specialized in this area.

5

Troubleshooting

If problems should occur, please check the items below before calling your service representative.

Fans do not start

1. Check the control panel for alarms.

2. Check that all fuses and fast couplings are connected (main power supply and fast couplings for supply and extract

air fans).

3. Check the week schedule. Fans may be set to

OFF

in the Schedule airflow settings menu.

Reduced airflow

1. Check the control panel for alarms. Some alarms can reduce the airflow to

LOW

if active.

2. The unit could be in defrost mode. This reduces the fan speed and in some cases shuts down the supply air fan com-

pletely during the defrosting cycle. The fans go back to normal after defrosting. There should be a defrosting function
icon visible on the home screen if defrosting is active.

3. Speed of fans is linearly reduced when the outdoor air temperature is below 0°C and an outdoor airflow compensa-

tion function is enabled.

4. Check if temporary user mode that reduces airflow is not activated, for example

Away

,

Holiday

, etc. Also check dig-

ital inputs

Central Vacuum Cleaner

and

Cooker Hood

.

254538 | v1

Summary of Contents for 488819

Page 1: ...Document in original language 254538 v1 SAVE VTR 150 B User Manual GB...

Page 2: ...stemair UAB All rights reserved E OE Systemair UAB reserves the rights to alter their products without notice This also applies to products already ordered as long as it does not affect the previously...

Page 3: ...nge the temperature 7 3 2 7 To change the airflow 7 3 2 8 To set a week schedule 8 4 Maintenance of the unit 9 4 1 Maintenance Schedule 9 4 2 To access internal components 9 4 3 To change filters 10 4...

Page 4: ......

Page 5: ...t Systemair will require these in the case of a warranty claim 1 3 Type label Before calling your service representative make a note of the specification and production number from the type label whic...

Page 6: ...SAVE LIGHT control panel Fig 2 Explanation of symbols SAVE LIGHT is a basic control panel for SAVE series resi dential air handling units SAVE LIGHT allows to change airflow levels and indicates when...

Page 7: ...ensation when the unit has been stopped 3 1 3 To cancel sleep mode Press any button to cancel the sleep mode SAVE LIGHT returns to the sleep mode after 3 minutes of inactivity All control panel lights...

Page 8: ...ge number and the second number indicates a total number of pages available Many options show up in a form of the pop up window Select the option from the displayed list in the pop up window and press...

Page 9: ...uick information screen shows the following information 1 Time 2 Outdoor temperature 3 Current User mode Alarm 4 Fan speed off Minimum Low Normal High Maximum 5 Supply air temperature 6 Relative humid...

Page 10: ...irflow setting in Week Schedule Manual Manual selection of airflow levels The unit can be set run at one out of four available airflow speeds Off Low Normal High Note The fan can be set to OFF by acti...

Page 11: ...ettings of all modes can be modified in Service menu 3 2 6 To change the temperature Touch the thermometer symbol on the home screen to open the temperature settings window Use up and down arrows to i...

Page 12: ...Use arrow buttons and to increase or decrease value Confirm with OK button Note Scheduled time can start but never end at midnight 00 00 The latest END TIME period is 23 59 Scheduled time cannot go t...

Page 13: ...ied out correctly and written evidence thereof is provided 4 1 Maintenance Schedule Task 6 months 1 year 3 years When necessary General inspection X Filter change X X Fan cleaning X Heat exchanger cle...

Page 14: ...set the filter change time Once filter is changed it is necessary to reset filter time Go to Filter menu see 3 2 2 Home screen overview page 4 pos E or if filter alarm is present click on alarm status...

Page 15: ...not exposed to moisture 4 Remount the rotor Don t forget to reconnect the rotor power and sensor cables 4 5 To clean fans Danger Make sure that the Mains supply to the unit is disconnected before perf...

Page 16: ...ve the side cover 3 Remove the broken drive belt 4 Use tape to attach the drive belt to the rotating heat exchanger and rotate the exchanger by hand to get hold of the drive belt 5 Remove the tape and...

Page 17: ...of the installation The duct runs should therefore be cleaned changed when necessary Steel ducts can be cleaned by pulling a brush soaked in hot soapy water through the duct via diffuser louvre openi...

Page 18: ...panel or via a hardwired switch 6 Check the analogue inputs in the service menu to verify that the temperature sensors are functioning correctly 7 In case of installed electrical other re heater batte...

Page 19: ...254538 v1...

Page 20: ...SAVE VTR 150 B User Manual 254538 en_GB 2021 03 15 v1 Systemair UAB Lin st 101 LT 20174 Ukmerg LITHUANIA Phone 370 340 60165 Fax 370 340 60166 www systemair com...

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