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- 19 Dec 2015
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Hi all i have a greenwood airvac rf90tw in the bathroom that is blowing instead of sucking, i have tried holding a couple pieces of toilet paper against the grill but it will not hold it up it just blows it away. What could be causing this issue as this fan is completely useless at the moment? The ducting is only about meter or so before it reaches the outside grill under the eaves as you can see.
I originally thought the external grill may be blocked so i disconnected the duct from the fan and poured about a litre of water down the duct and water came pouring out the external grill outside so if anything was blocked i am sure that would of cleared it. I reconnected the duct as you can see but im still getting the Same issue. I also have an en suite which has the exact same greenwood fan module and that has no issues clearing the moisture in the en suite and can easily hold up some toilet paper against its grill, that fan works as it should and is sucking instead of blowing like the bathroom fan is doing, i will also point out that this en suite fan has about 3 metres length of ducting as heads towards the outside grill so its much longer than the bathroom duct.
Ultimately i would just like to know what would be causing the bathroom fan to blow? As you can see the run for this fan is very short and how you see it in the picture is how i found it originally,.interestingly when i disconnected the duct from the fan i went back down to test the fan and was now sucking as it should do and holds up paper without issue like the en suite fan does, but for some reason when i reconnected the duct it starts blowing again.
Any help would be appreciated
Thanks.
I originally thought the external grill may be blocked so i disconnected the duct from the fan and poured about a litre of water down the duct and water came pouring out the external grill outside so if anything was blocked i am sure that would of cleared it. I reconnected the duct as you can see but im still getting the Same issue. I also have an en suite which has the exact same greenwood fan module and that has no issues clearing the moisture in the en suite and can easily hold up some toilet paper against its grill, that fan works as it should and is sucking instead of blowing like the bathroom fan is doing, i will also point out that this en suite fan has about 3 metres length of ducting as heads towards the outside grill so its much longer than the bathroom duct.
Ultimately i would just like to know what would be causing the bathroom fan to blow? As you can see the run for this fan is very short and how you see it in the picture is how i found it originally,.interestingly when i disconnected the duct from the fan i went back down to test the fan and was now sucking as it should do and holds up paper without issue like the en suite fan does, but for some reason when i reconnected the duct it starts blowing again.
Any help would be appreciated
Thanks.