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Honeywell 40003916-001 V4043H Replacement Powerhead
£55.44
Ex VAT: £46.20
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If the body is an ESI one, you cannot fit a Honeywell powerhead. You would need to change the complete valve for HCO code 09A05P. The wiring will be the same.
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I'm afraid not.
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Turn the cylinder thermostat right down, if it switches off when you do, it is the programmer at fault.
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It is 6 wire. When replacing a 5 wire actuator you simply isolate the extra white wire.
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The Honeywell 40003916-001 replacement powerhead is normally closed power to open. Yes it does include instructions. The warranty is 1 year from purchase.
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