Fault Finding Guide - Dantherm Silencio 600 Service Manual

Fault finding guide

This section will give you an instruction in locating the fault, when the fail LED on the
Introduction
control panel is active.
Besides fault finding from the LED signals Dantherm Air Handling can provide DanLink
DanLink
as accessory. DanLink can provide you with specific information of where the fault is
located.
For further information about DanLink, please see section "Accessories", page 35.
The control board is equipped with three failure or alarm relays.
Fail LEDs
These three relay's give alarms depending on the degree of alarm. The alarms are
categorized as follows:
Category
Warning
Fail
Alarm
Fault
during test
The following gives you a description of each type of alarm.
A warning is activated on one of the following events:
Warning
• The condenser temperature sensor is missing or short circuited
• The hot spot temperature sensor is short circuited
• The return air temperature is 20 °C above the compressor set point. The alarm will
• The return air temperature is 5 °C below the heater set point. 2 °C above this
• The condenser temperature has been above 75 °C. This warning will be cleared at
• The filter input is activated
• The unit is working in occupied mode
• Fail on the supply air sensor – open or short circuited
Fail LED
Permanently lit
Slowly flashing (½ Hz ~once
every 2 seconds)
Fast flashing (2 Hz ~ 2 per
second)
Flashing (1 Hz ~1 each
second) for 30 seconds after
the test has ended
be cleared when the temperature again is less than 18 °C above the set point
temperature the alarm will be cleared.
condenser temperature again is below 60 °C and have been for at least two
minutes
When to be cleared...
To be cleared when convenient
To be cleared soon but not
immediately
To be cleared as soon as possible
After the 30 seconds the LED will act
according to the severity of the fault
(one of the 3 above), and you should
act accordingly
Continued overleaf
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