Worcester Bosch Highflow 400 Rsf Problem

1. Worcester Bosch Highflow 400 Rsf Problem Login
2. Worcester Bosch Highflow 400 Rsf Problem List
3. Worcester Bosch Highflow 400 Rsf Problem Error

Simple Fault Finding ProcedureThe below guide is a quick and easy method to simply troubleshooting your, simply use the fault finding method below:. Electrical Checks. Test the electrical circuits by checking for short circuits, continuity (earth) and resistance (to earth). Ensure system has appropriate electrical polarity. For Electrical 230V Supply. Inspect the boiler unit to ensure that the supply voltage is 230 V.

For Gas Supply. Ensure the boiler has a gas supply. Check that it has been purged.Warning Warning: Ensure only qualified CORGI registered contractors do these checks, it is illegal and danergous if you conduct your own gas checks!. Heating system Filling. Check the boiler is full of water and pressurised to 1-1.5 BAR. Incorrectly filled boiler will.

Control. Ensure main switch is set to ‘on’. Temperature. ensure your heating temperature is set to the maximum setting. External Controls. Ensure that the controls circuit thermostat is calling for heat.24i RSF Fault FindingFollow the troubleshooting chart below to trace your 24i RSF issue and identify your boiler’s diagnosis. You will then be able to find the a suitable and fix your boiler.

Circuit DiagramGeneral FaultsPCB FaultsThermostats, Pump and Fan FaultsThermistor, Hardness Continuity and Short FaultsIgnition FaultsAir Pressure Switch and Gas Valve FaultsModulating Valve and Flow Switch FaultsWorcester Bosch Bi and SBi TroubleshootingConduct the following tests below to help fault find the specific issue you are experiencing with your Worcester Bi and SBi Boiler models. You can check the system for demand, indication or conduct a system test. Facia Indicator TestBoiler Demand TestSystem TestWorcester Bosch CBiUse the troubleshooting table or fault finding flowcharts below to identify your Worcester CBi fault and troubleshoot either a solution or replacement part. CBI Fault LightsCBi Fault Finding ChartWorcester Bosch CDiThe Worcester Bosch fault finding table below will help you diagnose your boiler’s fault and help you take the next decision in fixing the issue. You may want to then buy a of get a service engineer in to fix the issue. CDi Troubleshooting Table Play CodeDescriptionRemedyA1Pump has run dry.Check system pressure, add water and bleed system as necessary.A7Hot water NTC Sensor defective.Check hot water NTC sensor and connecting lead for circuit breaks/short circuits.b1Code plug not detechedInsert code plug correctly, test and replace if necessary.C6Fan speed too low.Check fan lead and connector, and fan; replace as necessary.E2CH flow NTC Sensor defective.Check CH flow NTC sensor and connecting lead.E9Safety temp.

Limiter in CH flow has tripped.Check system pressure,check safety temp. Limiters, check pump operation, check fuse on pob, bleed appliance.EAFlame not detected.Is gas cook turned on?

Worcester Bosch Highflow 400 Rsf Problem Login

Check gas supply pressure, power supply, iginiter electrode and lead, ionisation sensing electrode and lead, flue duct and CO2 level.F0Internal errorCheck electrial connector contacts, programmer interface modeule ignition leads are not loose; replace pcb if necessary.F7Flame detected even through appliance switched off.Check electrode assembly, dry pcb. Flue clear?FAFlame detected after gas shut off.Check gas valve and wiring to gas valve. Clean condensation trap and check electrode assembly. Flue clear?FdReset button pressed by mistake.Press reset button again.CDi Central Heating FunctionCDi Preheat and DHW FunctionWorcester Bosch Highflow 440Use the Fault Finding table below to diagnose your Worcester Highflow 440 problem to allow you to get your boiler working again.

Worcester Bosch Highflow 400 Rsf Problem List

Hi thereI have 2 Worcester Bosch Higflow 400's in 2 rented houses which havebeen an absolute nightmare. Both boilers were new about 4 years agoand in that time I have had perhaps 10 breakdowns on each boiler.Research on 'the net' reveals reliability problems with that model andit seems they are very sensitive to any rubbish at all in the centralheating system. My boilers were installed on clean (new) systems ofHEP2O pipe and new radiators and the system was well flushed proir toinstallationIt seems the diverter valve often goes wrong and there is a little 1way non return valve which often sticks. The plate heat exchanger hasbeen removed and descaled at least once on one boiler and the hightemperature trips have often 'popped out' even when brand new on both(these trips are not counted as a breakdown in my statistics!!)There is also little plastic filter (on the heatbank?) which clogs andeven the electronic timer clocks have gone wrong once on each boiler.Why should an electronic timer go wrong for goodness sake?I'd apprecaire replies on 2 things1. Any experiences you have had on this Worcester model (only) I knowWorcester generally are supposed to be good for reliability2. Comments on my plan is to install a stainless steel Megaflo (orsimilar pressurised tank like the Telford stainless tanks) asap tosupply hot water and junk the Highflows for a system boiler when thetenants move out next summer. I had one of these highflow 400's fitted 3 1/2 years ago.

Worcester Bosch Highflow 400 Rsf Problem Error

Worked fineuntil 2 weeks ago, until I noticed water coming through the kitchenceiling.the Highflow upstairs had sprung a leak on the plate exchanger. Calleda service engineer out from Worcester Bosch (no one else would touchit(not even the company who installed it) on one of their repairplans.Cost a set fee of £245 due to a new plate exchanger being fitted. Alsochanged were a diverter valve (supposedly sticking), a braided hose tothe pressure vessel and a pressure valve.The fault I was told was caused by the braided hose becoming blockedwith sludge, which in turn caused the other problems.On checking the braided hose later, looks more as though it hascollapsed internally as there seems to be a kink in it.The system had been cleaned prior to fitting the boilerI currently have Fernox super concentrate restorer circulting aroundthe system, due to be drained out later this week.