I am looking for help with our cooling unit. It stopped functioning last fall. So I have checked the fan; it works. The voltage to the unit measures 12.47 under no load and 11.25 under load, current draw is 6.5 amps for a short time. The model # is DCM12 Serial # 14893. It is abroad our 33 ft Newport.
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Debra B
11.25 is too low
These units typically shut themselves off when the voltage is low --- saving enough battery for a start. 11.5 is completely discharged 12 volt, and so the unit is probably shutting itself off. How long/what guage is the wire running to the unit? I had to install a separate breaker wired directly to my main batter switch (which happens to be near the icebox) to avoid a voltage drop in the circuit. It also puts an on-off switch right near the refrig which is nice.
These units typically shut themselves off when the voltage is low --- saving enough battery for a start. 11.5 is completely discharged 12 volt, and so the unit is probably shutting itself off. How long/what guage is the wire running to the unit? I had to install a separate breaker wired directly to my main batter switch (which happens to be near the icebox) to avoid a voltage drop in the circuit. It also puts an on-off switch right near the refrig which is nice.
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WAECO ADLER BARBOUR SERVICE
VOLTAGE DROP
THE PROBLEM AS YOU DISCRIBE IS NOT ENOUGH VOLTAGE AFTER THE COMPRESOR ATTEMPS TO START. TRY HEAVIER WIRE DIRECT FROM BATTERY TO CONTROL MODULE WITH THE "T" AND "C" PINS JUMPED OUT, IF THAT WORKS FIND YOUR ELECTRICAL LOSS AND FIX THAT
THE PROBLEM AS YOU DISCRIBE IS NOT ENOUGH VOLTAGE AFTER THE COMPRESOR ATTEMPS TO START. TRY HEAVIER WIRE DIRECT FROM BATTERY TO CONTROL MODULE WITH THE "T" AND "C" PINS JUMPED OUT, IF THAT WORKS FIND YOUR ELECTRICAL LOSS AND FIX THAT
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Gary
might be the fan
Doug, Debra's on the right track. Sounds like a voltage drop problem, but if the unit still has the original brush motor fan, try disconnecting one of the fan wires. As these fans age they draw more and more amps. If the compressor starts, order a fan kit, part number F1809. It contains a retro bracket and a brushless .32A fan.
Doug, Debra's on the right track. Sounds like a voltage drop problem, but if the unit still has the original brush motor fan, try disconnecting one of the fan wires. As these fans age they draw more and more amps. If the compressor starts, order a fan kit, part number F1809. It contains a retro bracket and a brushless .32A fan.
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Doug Kinnear
Fan
Thanks for the idea on the fan. I checked the current draw today .2 amps dropping to .o5 when the system tried to start. I also tried disconnecting the fan. No success. Thank you for the idea.
Thanks for the idea on the fan. I checked the current draw today .2 amps dropping to .o5 when the system tried to start. I also tried disconnecting the fan. No success. Thank you for the idea.
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Doug Kinnear
voltage drop
I hot wired the cooling unit by running acouple 10gage wires directly from one of the batteries. The voltage only dropped to 12.04 under load But still no success. I am beginning to think I am in trouble Thanks for the idea. Doug
I hot wired the cooling unit by running acouple 10gage wires directly from one of the batteries. The voltage only dropped to 12.04 under load But still no success. I am beginning to think I am in trouble Thanks for the idea. Doug
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Doug Kinnear
T And C pin jumped out
I also tried this when I was tring Debras idea. No sucess Thanks for idea doug
I also tried this when I was tring Debras idea. No sucess Thanks for idea doug
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Gary
try this
Take a resistance reading on the compressor. Unplug the control module from the compressor. There will be 4 pins in an offset diamond pattern. The bottom (lowest) pin is common. Bottom to top should give you 2.5 to 4.5 OHMS. Bottom to the 2 middle pins should give you .3 to .6 OHMS. If it checks out ok, you probably need a new control module. There's really no reliable way to test the module in the field, but if you send it to us, we'll test it at no charge.
Take a resistance reading on the compressor. Unplug the control module from the compressor. There will be 4 pins in an offset diamond pattern. The bottom (lowest) pin is common. Bottom to top should give you 2.5 to 4.5 OHMS. Bottom to the 2 middle pins should give you .3 to .6 OHMS. If it checks out ok, you probably need a new control module. There's really no reliable way to test the module in the field, but if you send it to us, we'll test it at no charge.
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Doug Kinnear
Resistance readings
GARY THE RESISTANCES MEASURED 4 OHMS BOTTOM TO TOP AND .4 OHMS BOTTOM TO EITHER SIDE. What address should I send it to? I pulled the controll module out yesterday. It is a Danfoss BD102N3016 Thank you Doug Kinnear
GARY THE RESISTANCES MEASURED 4 OHMS BOTTOM TO TOP AND .4 OHMS BOTTOM TO EITHER SIDE. What address should I send it to? I pulled the controll module out yesterday. It is a Danfoss BD102N3016 Thank you Doug Kinnear
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