iannotts
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have you got the connections on the relay correct.
that sounds like a dead short. ie. when you flick the switch the power goes straight to earth (neg)
kenlowe wiring
- Thread starter 1987tjs
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have you got the connections on the relay correct.
that sounds like a dead short. ie. when you flick the switch the power goes straight to earth (neg)
1987tjs
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i'll check the relay tomorrow as it's to dark to see anything now
cheers
cheers
1987tjs
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i used a 30amp fuse and a resistor insead of a diode
1987tjs
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i was told a resistor was the same as a diode, if i remove the resistor will it solve the blowing fuses. i a no electician
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Always build electrics in small sections.
first wire the switch in place and make sure you have an off and two on positions.
then wire in the relay to the switch and ensure the relay is triggered by the perm on and the thermostatic control.
then fit the warning light and check that works ok
then fit the fan
the diode is only fitted (and has to be of the same current value as the fan (or higher)) to stop the warning bulb glowing when the sysyem is turned off, but the fan turns because of the airflow going through it..... ( a fan is both a motor and a generator, so if it is being spun up by airflow, it produces volts - enough for the bulb to glow - it looks quite pretty as its brightness depends on fan speed). The diode acts as a one-way switch - ie allowing volts to the fan, but not from it; and is not absolutely necessary.
Where have you fitted, and what value are the fuses?
first wire the switch in place and make sure you have an off and two on positions.
then wire in the relay to the switch and ensure the relay is triggered by the perm on and the thermostatic control.
then fit the warning light and check that works ok
then fit the fan
the diode is only fitted (and has to be of the same current value as the fan (or higher)) to stop the warning bulb glowing when the sysyem is turned off, but the fan turns because of the airflow going through it..... ( a fan is both a motor and a generator, so if it is being spun up by airflow, it produces volts - enough for the bulb to glow - it looks quite pretty as its brightness depends on fan speed). The diode acts as a one-way switch - ie allowing volts to the fan, but not from it; and is not absolutely necessary.
Where have you fitted, and what value are the fuses?
just remove the resistor alltogether (short it) and put the light across the relay coil terminals - and then check again and again that the wiring is correct - might want to disconnect the fan and listen to see if the relay trips in when the stat tells it to
if it does and your still blowing fuses (and your sure it's wired correctly and your sure the fan works) then try a slightly larger one
is there a rating label on the fan hub ?
1987tjs
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it's 30amp fuse and i fitted it in the supply to the switch and come of that with a piggy back connector to the relay
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A resistor is NOT the same as a diode - far from it. Remove the resistor, as it might be making the system draw more current then necessary. Not that it matters, coz it is WRONG - but what value did you fit?
you are using the diode only because....
"The most common function of a diode is to allow an electric current to pass in one direction (called the forward biased condition) and to block the current in the opposite direction (the reverse biased condition). Thus, the diode can be thought of as an electronic version of a check valve."
30AMPS! _ BLOODY HELL _ are you using an industrial airconditioning fan? Dont answer that - i know they are AC
.
you are using the diode only because....
"The most common function of a diode is to allow an electric current to pass in one direction (called the forward biased condition) and to block the current in the opposite direction (the reverse biased condition). Thus, the diode can be thought of as an electronic version of a check valve."
30AMPS! _ BLOODY HELL _ are you using an industrial airconditioning fan? Dont answer that - i know they are AC
.1987tjs
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what size fuse then, so if i remove the resistor i don't realy need a diode
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No - you dont need the Diode - but you will have to put up with the warning lamp glowing to varying degrees, depending how much the fan is turning.
Silly Q - but you do know how to wire up a relay, dont you, because it sounds like you are shorting the relay to ground.
85 goes to switch
86 goes to ground
30 goes to power
87 goes to fan
Silly Q - but you do know how to wire up a relay, dont you, because it sounds like you are shorting the relay to ground.
85 goes to switch
86 goes to ground
30 goes to power
87 goes to fan
are you sure you've got what terminal does what sorted on the relay ?
have you got a fire extinguisher handy ?
1987tjs
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does it make any difference that i went from switch to thermo to relay because thats what it said on the diagram
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cant yu see the web-cam behind ya, Sean?
another thing - have you checked that the fan works OK, by strapping it across a battery?
and what current (amps) does it take?
another thing - have you checked that the fan works OK, by strapping it across a battery?
and what current (amps) does it take?
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No - but I also put on a by-pass so that yu can turn it on from the switch, rather than going thru the thermostat.
1987tjs
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so what size fuse will i need for the kenlowe fan also what size fuse would i need for four spot lights across the roof
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erm
Kenlowe recommend 30Amps.
I know
Kenlowe recommend 30Amps.
I know
