Replace Honeywell R3H710 with Hive Receiver

[Travelbugkim]

Hi, I am looking to replace my old Honeywell receiver with a Hive mini but the wiring on my old receiver doesn’t seem to match up to the manual for Hive/it has confused me re the red wire running from L to A? Anyone seen something like this before/know what I need to do? Thanks in advance!

 

[Travelbugkim]

Would it be a

Hi, I am looking to replace my old Honeywell receiver with a Hive mini but the wiring on my old receiver doesn’t seem to match up to the manual for Hive/it has confused me re the red wire running from L to A? Anyone seen something like this before/know what I need to do? Thanks in advance!View attachment 286939

would it be a case of
Honeywell N to Hive N
Honeywell L to Hive L
Honeywell A to Hive 1 and Hive L
Honeywell B to Hive 2 (or the Earth tether?)

 

[Deleted member 267285]

Would it be a

would it be a case of
Honeywell N to Hive N
Honeywell L to Hive L
Honeywell A to Hive 1 and Hive L
Honeywell B to Hive 2 (or the Earth tether?)

All correct apart from the last bit. The earth tether, Someone has incorrectly used a wire that is generally used as a cpc/earth wire as a live wire, and place it in terminal 3 heating on, not 2 heating off.

 

[Travelbugkim]

All correct apart from the last bit. The earth tether, Someone has incorrectly used a wire that is generally used as a cpc/earth wire as a live wire, and place it in terminal 3 heating on, not 2 heating off.

Thank you so much for this! I was just thrown by the earth wiring as it seems to be yellow or grey even on all the other posts I’ve found, so wasn’t sure what it was!

 

[Deleted member 267285]

This is why some of us will say “never trust heating wire colours - they mean nothing” as you’ve found out in your example. I forgot to mention, put some brown sleeve on it or brown insulation tape to warn others it’s being used as a live wire.

 

[Travelbugkim]

This is why some of us will say “never trust heating wire colours - they mean nothing” as you’ve found out in your example. I forgot to mention, put some brown sleeve on it or brown insulation tape to warn others it’s being used as a live wire.

I will do! Thank you so much again, I’ve done it, although there were moments I’m not sure how I did as the previous box was much bigger so didn’t slot in as I hoped and had to do some rejigging!

A few photos in case anyone else faces the same issue in the future

 

[Deleted member 267285]

I will do! Thank you so much again, I’ve done it, although there were moments I’m not sure how I did as the previous box was much bigger so didn’t slot in as I hoped and had to do some rejigging!

A few photos in case anyone else faces the same issue in the future
View attachment 286970

Excellent, and well done you.