contact info for Macurco

[yellowirenut]

have a CO detector FLASHING an amber light. ran unit threw test and nothing came up and light is back to solid green.
Instructions say nothing about flashing. Would like to give them a call but number is out of order.

model: CM-21A
make : Macurco

it has 3M printed on the cover

[ascj]

have a CO detector FLASHING an amber light. ran unit threw test and nothing came up and light is back to solid green.
Instructions say nothing about flashing. Would like to give them a call but number is out of order.

model: CM-21A
make : Macurco

it has 3M printed on the cover

They can be a pain. If it's flashing amber, then it's a error. Mostly caused by a voltage problem to the sensor. If your 24v is good and you still have one erroring out, then just replace it.


Normally it's a sensor going bad.

[yellowirenut]

thanks for the info...thing is 10 months old. If it does it again i will change it out.

[ascj]

thanks for the info...thing is 10 months old. If it does it again i will change it out.

How is the voltage to it? They are very picking with voltage.....and you find alot installed with very long undersized wire.

[yellowirenut]

just one sensor..on its own transformer 18 ga wire less than 40ft. Wired so an exhaust fan contractor is pulled in on ether high CO or t-stat call for cool.

[ascj]

just one sensor..on its own transformer 18 ga wire less than 40ft. Wired so an exhaust fan contractor is pulled in on ether high CO or t-stat call for cool.

So the two reds are directly wired to your transformer, with no other connections to you fan?

Reason I ask....is sometimes erratic voltage doesn't happen until the sensor actually senses CO for fan activation, under certain wiring situations.

You can check it by activating the CO sensor with a CO kit. We use the kit from Macurco.