OPERATION AND MAINTENANCE INSTRUCTION TOPVEX SR TR 254051A003
Table Of Contents
- 1 Overview
- 2 Warnings
- 3 Warnings signs on product
- 4 Product description
- 5 Internal components position
- 6 Start up
- 7 Operation
- 8 Maintenance
- 8.1 Maintenance intervals
- 8.2 How to replace supply/extract air filter
- 8.3 How to clean NaviPad
- 8.4 How to clean the heat exchanger
- 8.5 Control of the heat exchanger
- 8.6 How to clean fans
- 8.7 How to clean hot water heating coil
- 8.8 How to clean electric heating coil
- 8.9 How to clean the extract air louvres and inlet diffusers
- 8.10 Clean the outdoor air intake
- 8.11 How to clean the duct system
- 8.12 Where to reset tripped fuses
- 8.13 How to reset the manual overheat protection (EL units)
- 8.14 How to replace the fan module
- 8.15 How to replace the heat exchanger
- 8.16 Change the internal battery in control unit CU27–C
- 9 Troubleshooting
- 10 Alarms
- 11 Service
- 12 General conditions
28
| Troubleshooting
9 Troubleshooting
Check or correct the following before contacting your service representative. Always check if there are any alarms ac-
tive in the control panel (chapter 10).
1. Fan(s) do not start
• Check if there are any alarm messages.
• Check the settings in the control panel (times, week schedule, auto/manual operation etc.).
• Check if the fuses has tripped.
2. Reduced airflow
• Check if there are any alarm messages.
• Check the settings for normal and low fan speed.
• Check if any reduced speed input is active.
• Check if filters need changing.
• Check that the outdoor/exhaust air damper (if used) opens.
• Check if diffusers and louvres need cleaning.
• Check diffuser/louvre openings.
• Check if fans and exchanger block need cleaning.
• Check if the roof unit or air intake is clogged.
• Check ducts for visible damage and/or build up of dust/pollution.
3. Cold supply air
• Check if there are any alarm messages.
• Check if the fans have stopped. If so the alarm relay might have tripped (shown as fan alarm in the control panel).
• Check the temperature settings in the control panel.
• Check if the extract filter must be changed.
• Check if the overheating thermostat has tripped. After the heater has cooled down, press the red button on the
electrical heater.
4. Noise/vibrations
• Check that the unit is completely levelled.
• Clean the fan impellers.
• Check that the screws holding the fans are tightened properly.
254051 | A003