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Nibe
Control Unit
VVM 320
Technical Manual
Page 74 (Schedule Blocking of Operations)
Nibe VVM 320 - Schedule Blocking of Operations
88 pages
Manual
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Display
unit
(AA4)
Catch
Electrical
switch
Network
cable
1
Detach
the
cable
from
the
lower
edge
of
the
display
unit.
2
Press
the
catch
on
the
up-
per
rear
side
of
the
display
unit.
3
Slide
the
display
unit
up
until
it
releases
fr
om
the
mounting.
NIBE™
VVM
320
Chapter
7
|
Component
replacement
72
73
75
Table of Contents
Main Page
Default Chapter
3
Table of Contents
3
Important Information
4
Document Information
4
Safety Information
4
Symbols
4
Marking
4
Serial Number
4
Contact Information
5
Indoor Module's Design
6
VVM 320
6
Pipe Connections
7
HVAC Components
7
Sensors Etc
7
Electrical Components
7
Miscellaneous
7
System Description Principle of Operation
8
Principle of Operation
8
Pipe Connections
8
HVAC Components
8
Sensors Etc
8
System Diagram
9
Description of Functions
10
Menu Tree
10
Operating Status
13
Hot Water
15
Heating
17
Cooling
18
Scheduling
18
Addition
19
Load Monitor
19
External Connection Options
20
Circulation Pumps
21
Supply Pump Exercise
24
Valves
24
Valve Exercising
24
Floor Drying
24
Uplink
24
Smart Grid (SG)
25
Usb
26
Accessories
28
Nibe™ VVM
29
System Description
8
4 Descriptionoffunctions
10
Component Description
37
Components
37
Sensors
41
Data Temperature Sensor
41
Electronics
42
Immersion Heater Card (AA1)
42
Base Card (AA2)
42
Input Circuit Board (AA3)
42
Display Unit (AA4)
43
Troubleshooting
44
Troubleshooting Alarm List
44
Alarm List
44
A-Alarm
44
B Alarm
48
Troubleshooting Guide
51
Alarm 1 - Sensor Fault
51
Alarm 2, 3, 6, 31 - Sensor Fault
52
Alarm 33-38 - Sensor Fault
53
Alarm 70 - Perm. Com.error Input Card
54
Alarm 71 - Perm. Com.error Input Card
55
Function Check, Components
56
Relay Test - Forced Control
56
Function Check, Circulation Pumps
57
Component Replacement
58
Basic
58
Removing the Covers
58
Accessibility, Electrical Connection
58
Main Components
61
Replacement of Immersion Heater
61
Replacing the Circulation Pump GP1
64
Replacing the Circulation Pump GP6
66
Replacement of Reversing Valve QN 10
68
Circuit Board and Electronics
71
Immersion Heater Card (AA1)
71
Base Card (AA2)
72
Input Circuit Board (AA3)
73
Display Unit (AA4)
74
Technical Data
75
Electrical Circuit Diagram, 3 X 400V
75
Dimensions and Setting-Out Coordinates
80
Technical Specifications
81
3X400V
81
Index
82
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