Dantherm HCV 500, Service Manual

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35
096391
• Versio
n
2909.20
17
Troubleshooting
Introduction Errors are indicated by an LED located under the filter
reset
button.
If the LED slowly flashes orange, it means you need to replace the air filters.
See page 10
LED displays
Software <2.0 If this LED is red it indicates an operating error. The red LED can indicate three different
errors:
LED Red Description
Flashing slowly  Error on the bypass damper
 Error on the internal temperature sensor T3/T4
Flashing rapidly  Error on the fan
 Supply temperature is <+5°C

External fire alarm is activated

One of the internal temperature sensors is measuring >70°C
Lights constantly

T1/T2 Temperature sensor is defective
LED displays
Software
≧ 2.0
If the LED flashes RED then there is an operating error. The length of the flash corre-
sponds to an error code with corresponding digits in the left column of the table below,
followed by a 5 second break.
Number of
flashes
Error number
Control panel
Error
1 E 1 Exhaust fan
2 E 2 Supply fan
3 E 3 Bypass damper
4 E 4 Outside air temperature sensor (T1)
5 E 5 Supply air temperature sensor (T2)
6 E 6 Extracted air temperature sensor (T3)
7 E 7 Exhaust air temperature sensor (T4)
8 E 8 Indoor air temperature sensor (T5)
9 E 9 Humidity sensor, RH% (optional extra)
10 E 10 Outside temperature < -13°C
11 E 11 Supply air temperature < +5°C
12 E 12 Fire alarm, one or more of the internal sensors is
measuring a temperature over 70°C.
13 E 13 Communication error / poor signal
14 E 14 Fire alarm, thermostat in the duct system. (Optional
extra)
15 E 15 High water level
Continued overleaf