TC Electronic BH250 User Manual - page 12
10
appendIx – protectIonS modeS
This amplifier is equipped with an advanced protection system
for both the amplifiers and your own safety. These protection
features should only kick in if you operate the amp under
extreme conditions.
Ventilation
Be sure not to cover the BH250 cooling grid!
Insufficient ventilation may cause the amplifier’s temperature to
increase to critical values.
Protection Modes
The BH250 is equipped with an intelligent protection system,
ensuring that the amp does not suffer or malfunction if operated
wrongly or in extreme environments.
When the amplifier switches to Protection mode the speaker
output is muted and the TUNER LEDs start flashing in pairs of
two.
Protection mode is invoked when:
- if a short circuit situation occurs (on speaker outputs)
- if the amplifier is used in an environment that is too hot
- if proper ventilation is not ensured
In Protection mode, the speaker outputs are shut off to prevent
speaker damage. However, the balanced output still passes
audio.
How to proceed if you experience Protection mode
– If the amplifier does not automatically recover from
Protection mode and feels hot, try turning off the amplifier for
a minute to let it cool. Ensure sufficient ventilation.
– Ensure that your speaker cable is not defect, thereby
causing a short-circuit.
– Turn on the amplifier again.
If these steps doesn’t solve the problem and the Tuners LED’s
continue to flash, you will have to send the BH250 to a qualified
service center for inspection.