Halyard Exhaust Alarm Issue

[Dino]

Hi, I have a Halyard HMI Alert System (HMI 103/01) fitted on my Broom.
I get short intermittent alarms from the dash mounted buzzer. But the temperatures are fine on both engines.
Anyone had this issue and found a solution before I smash it with a hammer.

 

[jrudge]

My Fairline has a small black sensor in the exhaust cold section. I assume it is halyard as they made the exhaust. Remove the plug and clean it. If if goes open circuit it goes off

 

[Dino]

Thanks, I’ll have a look. I ended pulling the power wires out of the control box yesterday it was so annoying. Handy thing to have so I’ll try cleaning the plug.

 

[fred247]

Hi, I have a Halyard HMI Alert System (HMI 103/01) fitted on my Broom.
I get short intermittent alarms from the dash mounted buzzer. But the temperatures are fine on both engines.
Anyone had this issue and found a solution before I smash it with a hammer.

engine temps don't really have anything to do with the exhaust alarms, they measure the temp of the exhaust just after the water injection point and are more an indication of poor water flow within the exhaust, check the colour code leds on the unit when the alarm sounds - orange standby, red port engine, green stb engine.