Hello,
I have an immersion heater with a Horstmann Economy 7 controller. The immersion tank has 2 elements.
The Economy 7 function works ok (bottom element).
When I try to use the 1 hour Boost function (top element), the boost light on the Horstmann flickers on briefly but then goes out again. The timer moves round but I don't get a boost light or any hot water.
The only way I can get hot water outside of Economy 7 hours is to temporarily manually move the clock so that the system thinks it is 1 am in the morning. I'm assuming in this case the system is using the bottom element?
I've had the immersion tank drained and the top element replaced but that still didn't make any difference.
I've also swapped the top and bottom elements round and tried the reset switch on the top element but none of that makes any difference. The boost function still doesn't work.
I'm puzzled as I assume that the timer must be ok if it works in Econ 7 mode?
I have an immersion heater with a Horstmann Economy 7 controller. The immersion tank has 2 elements.
The Economy 7 function works ok (bottom element).
When I try to use the 1 hour Boost function (top element), the boost light on the Horstmann flickers on briefly but then goes out again. The timer moves round but I don't get a boost light or any hot water.
The only way I can get hot water outside of Economy 7 hours is to temporarily manually move the clock so that the system thinks it is 1 am in the morning. I'm assuming in this case the system is using the bottom element?
I've had the immersion tank drained and the top element replaced but that still didn't make any difference.
I've also swapped the top and bottom elements round and tried the reset switch on the top element but none of that makes any difference. The boost function still doesn't work.
I'm puzzled as I assume that the timer must be ok if it works in Econ 7 mode?