Operation and Maintenance Instructions
Table Of Contents
- 1 Overview
- 2 Warnings
- 3 Warnings signs on product
- 4 Product description
- 5 Start up
- 6 Operation
- 7 Maintenance
- 7.1 Maintenance intervals
- 7.2 How to replace supply/extract air filter
- 7.3 How to clean NaviPad
- 7.4 How to clean the heat exchanger
- 7.5 How to clean the fans
- 7.6 How to clean hot water heating coil
- 7.7 How to clean the electric heating coil
- 7.8 How to clean the extract air louvres and inlet diffusers
- 7.9 Clean the outdoor air intake
- 7.10 How to clean the duct system
- 7.11 Where to reset tripped fuses
- 7.12 How to reset the manual overheat protection (EL units)
- 7.13 How to replace the fan module
- 7.14 How to replace the heat exchanger
- 7.15 Change the internal battery in control unit CU27–C
- 8 Troubleshooting
- 9 Alarms
- 10 Service
- 11 General conditions
- 12 Spare parts
32
| Alarms
9 Alarms
A LED-light in the NaviPad button indicate the status of the air handling unit.
• Fixed green — Status ok (no active alarms).
• Flashing red — Active/returned alarms in one or several air handling units or lost connection with an air handling
unit.
• Fixed red — Acknowledged/blocked alarms in one or several air handling units, alarms not reset.
Different alarm levels
Class A alarm
Needs to be acknowledged
Class B alarm
Needs to be acknowledged
Class C alarm
Returns when the cause of the alarm disappear
9.1 Alarm list
Note:
Minimum Operator level to be able to acknowledge or handle alarms.
Data & Settings > Alarm list
2022–02–04
Acknowledge all
No
Name:
Level:
Status:
Filter guard 1
Alarmed
Show all alarms
>
Alarm history
>
Alarm snapshot
>
Alarm status:
• Alarmed
• Acknowledged
• Blocked
• Returned
Accessible when pressing the alarm symbol.
Enter the current alarm and choose action; acknowledge, block or unblock.
214959 | A007