Troubleshooting MCAC-KTSM-2009-03
20 Heat Recovery Ventilation
14.2 Troubleshooting
Replace main controller panel
T4 sensor error / T1 sensor error
Check whether the wiring of the temp. sensor is break off
Connect the wiring well
Yes
No
Check whether the resistance of temp. sensor is wrong refer
to the Annex 1
Yes
Replace temp. sensor
No
Replace main controller panel
Current protection
Check: whether the current reach 5A.
Turn off all motors, and
restart 3 minutes later.
Yes
No
Check the main controller panel
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