SDC12-31 ACD01 TUV
ATMOS ACD01 – SERVICE MANUAL EN
168
10 Tips and tricks
This chapter serves as a guide for understanding of some statuses of components
controlled by the ACD01 controller. As the controller contains a lot of adjustable
options, variable inputs and parameters, not all causes and problems can be
explained here. For this purpose use the Service Manual, this table only serves as a
quick reference guide.
Principal terms
- Temperature is specified in °C, temperature difference (differential) is specified in
Kelvin and the relationship is 1 K = 1 °C
-
The
“i“
key is used to view the condition and temperatures of the whole system,
so first it is necessary to verify all information about current and required
temperatures, status of individual components to determine whether an error has
occurred.
- If parameters that have an influence on the function and calculations of the
controller are changed during operation, the controller must be switched off and on
again so that all calculation can be performed with new values.
Component
Problem
Boiler type
Arrangement
Note
Possible cause
Non-controlled or
pellet boiler
The switch-on temperature of the
pump is higher than the current
boiler water temperature
Flue gas sensor
boiler
Without an
accumulation
tank
Low flue gas temperature
OFF although
the boiler is
heating
Flue gas sensor
boiler
With an
accumulation
tank
Water temperature is lower than
tank water temperature by more
than 3°C
Boiler pump
ON although the
boiler
temperature is
lower than the
tank temp.
With an
accumulation
tank
If the current boiler temperature is
higher than the critical one, the
pump is ON to relieve energy from
the boiler
With a room
unit
The current boiler temperature is
lower than the system switch on
temperature
Without an
accumulation
tank
Without a
room unit
Wrongly set heating curve or its
inclination, active summer mode,
etc.
Low accumulation tank
temperature
Is continuously
closed although
the desired
room
temperature is
not achieved
With an
accumulation
tank
System pump
is running
Low accumulation tank
temperature, active frost
protection
Without an
accumulation
tank
With a room
unit
Current boiler temp. is higher than
critical, the pump is ON and mixer
open to relieve energy from boiler
Any
Without a
room unit
Wrongly set heating curve or its
inclination, active summer mode,
etc.
Three-way
mixer
Is continuously
open although
the room
temperature is
higher than the
desired one
With an
accumulation
tank
With a room
unit
Current boiler temp. is higher than
critical, the pump is ON and mixer
open to relieve energy from boiler
No system start temperature
REDUCED mode is set and room
temperature achieved
At standstill
Thermostat function active
Frost protection active
System
pump
Running
Any
ANTI-BLOCKING active in
summer mode
Boiler fan
Stops after 1
hour from start-
up
Flue gas sensor
boiler
Any
Minimum flue gas temperature is
not achieved
