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Central Heating & Storage Heaters Forum
Help! My tenant has recently changed to a smart meter now Economy 7 not working to storage heaters /water cylinder
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<blockquote data-quote="ProDave" data-source="post: 484559" data-attributes="member: 6969"><p>You need a methodical approach.</p><p></p><p>1) Confirm by dead testing that the off peak water heater heater and storage heater circuits are correct and working. Tip measure resistance L-N of each circuit at the off peak CU, a working heater element will measure typically 10 to 30 ohms.</p><p></p><p>2) confirm an off peak supply IS connected to the CU. If it has just been swapped for a normal smart meter, the meter will only have 4 terminals and no switched off peak output. It should be obvious if there is a "spare" meter tail no longer going anywhere. A normal off peak supply with either have a separate time switch of some sort, or a modern dual rate meter with a built in time switch which will have a separate switched L output for the off peak consumer unit.</p><p></p><p>3) confirm the off peak supply is coming on at night. Now you don't want to be visiting your customer in the middle of the night. So what I do is connect a neon between one of the off peak circuit L's and Neutral, and leave it somewhere visible. Then instruct your customer to set an alarm, and go and have a look in the middle of the night and tell you (next day) if the neon came on in the night or not. If it did not, then you have evidence to contact the supplier and tell them the off peak supply is not coming on at night and they need to fix it. you don't need to worry what needs fixing, that is the DNO's responsibility. </p></blockquote><p></p>
[QUOTE="ProDave, post: 484559, member: 6969"] You need a methodical approach. 1) Confirm by dead testing that the off peak water heater heater and storage heater circuits are correct and working. Tip measure resistance L-N of each circuit at the off peak CU, a working heater element will measure typically 10 to 30 ohms. 2) confirm an off peak supply IS connected to the CU. If it has just been swapped for a normal smart meter, the meter will only have 4 terminals and no switched off peak output. It should be obvious if there is a "spare" meter tail no longer going anywhere. A normal off peak supply with either have a separate time switch of some sort, or a modern dual rate meter with a built in time switch which will have a separate switched L output for the off peak consumer unit. 3) confirm the off peak supply is coming on at night. Now you don't want to be visiting your customer in the middle of the night. So what I do is connect a neon between one of the off peak circuit L's and Neutral, and leave it somewhere visible. Then instruct your customer to set an alarm, and go and have a look in the middle of the night and tell you (next day) if the neon came on in the night or not. If it did not, then you have evidence to contact the supplier and tell them the off peak supply is not coming on at night and they need to fix it. you don't need to worry what needs fixing, that is the DNO's responsibility. [/QUOTE]
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Help! My tenant has recently changed to a smart meter now Economy 7 not working to storage heaters /water cylinder
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