Faults - Dimplex M Flex Air Installation And Operating Instruction

English

11 Faults

Filter, status and fault signals are displayed with a plain text
message on the control panel of the ventilation unit.
If error signals are active, the backlighting of the display flashes.
Code Display
-
None (display off)
-
None (display off)
-
Filter!
-
Exh.air>Sup.air!
-
Cooling prevent.
-
External OFF
E00
E00:Unit config.
E01
E01:air-balance
E03
E03:int.error
E05
E05:ext.overload
E09
E09:Balance
E11
E11:Fan1 start
E12
E12: Fan2 start
E13
E13: Fan1 high
E14
E14: Fan2 high
E15
E15: Fan1 low
E16
E16: Fan2 low
E17
E17: Fan1 stop
E18
E18: Fan2 stop
E21
E21: Sensor1
E22
E22: Sensor2
E23
E23: Sensor3
36
Status Fault
Display is blank
Off
Unit is not running
Display is blank
In operation
Filter soiled
In operation
Exhaust air volume flow greater
than supply air volume flow,
In operation risk of negative pressure *
Switch off if residential unit
Off unheated
Switch-off
Off via external signal
Unit will not start up
Off
Exhaust air volume flow greater
than supply air volume flow,
Off risk of negative pressure *
Internal communication error
Off
Supply voltage
Off broken down,
24V DC overloaded
Input error volume flow: Exhaust
Off
air greater than supply air
Outside air / supply air fan VM1
Off does not start *
Exhaust air / extract air fan VM2
Off does not start*
Outside air / supply air fan VM1
Off speed too high *
Exhaust air / extract air fan VM2
Off speed too high *
Outside air / supply air fan VM1
Off
speed too low *
Exhaust air / extract air fan VM2
Off
speed too low *
Outside air / supply air fan VM1
Off not running *
Exhaust air / extract air fan VM2
Off not running *
Off Sensor 1 outside air
Off Sensor 2 supply air
Off Sensor 3 exhaust air
DOK4SVxxDEN · FD 9912
Domestic ventilation unit M Flex Air (Plus)
CAUTION!
Repairs must be carried out by a qualified engineer. Only use
genuine spare parts from the manufacturer.
Cause
No power supply
Cable to the display or display
board faulty.
Level of soiling reached
Exhaust air fan speed
350 rpm higher than supply fan
speed
Exhaust air temperature < +8°C,
switch-off for frost protection in
the residential unit
External on/off signal,
external smoke detector,
RM contacts
Unit configuration not entered
Exhaust air fan speed
500 rpm higher than supply fan
speed
Microprocessor or CPU board
faulty
Short-circuit
Volume flow parameter error
No fan speed for 30 s, cable break,
fan blocked or faulty, no data com-
munication
No fan speed for 30 s, cable break,
fan blocked or faulty, no data com-
munication
Air resistance in the outside air /
supply air duct system too high
Air resistance in the exhaust air /
extract air duct system too high
Fan impeller mechanically dam-
aged
Fan impeller mechanically dam-
aged
Speed = 0, cable break, fan
blocked or faulty, no data commu-
nication
Speed = 0, cable break, fan
blocked or faulty, no data commu-
nication
Sensor or cable faulty
Sensor or cable faulty
Sensor or cable faulty
Action
Check power supply
Check cable, replace display board
Check/replace filter,
Filter reset
Check filter, replace if necessary,
Regulate and adjust outside air/
supply air and exhaust air/extract
air duct system volume flows /
pressure drops
Automatic start-up at room tem-
perature > +9°C
Automatic
Enter unit configuration, for U/V
code see type plate
Check filter, replace if necessary,
Regulate and adjust outside air/
supply air and exhaust air/extract
air duct system volume flows /
pressure drops
Replace CPU board
Inform after-sales service
Volume flow parameter
Correct exhaust air
Check / replace connection cable
and fan VM1, repeat fan address-
ing
Check / replace connection cable
and fan VM2, repeat fan address-
ing
Check outside air / supply air duct
system,
check/replace filter
Check the exhaust air/extract air
duct,
check/replace filter
Check fan VM1
Check fan VM2
Check / replace connection cable
and fan VM1, repeat fan address-
ing
Check / replace connection cable
and fan VM2, repeat fan address-
ing
Check / replace outside air sensor
Check / replace supply air sensor
Check / replace exhaust air sensor
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