Recent: Will I need to replace my garden tap?

Mend > Home Heating Systems

Mend Baxi 105e Heating Thermostat Overheat

what is wrong with my baxi 105e instant?

Both c/h and dhw keep tripping off after a certain period of time. I have replaced overheat thermostat as an initial measure but the problem will not go away. the heater fires up when the system cools down but the amount of available hot water is variable sometimes only a couple of minutes. grateful for any assistance. Jim.

jim Rothwell
January 2008
BaxiBaxi 105eHeating, Home Heating SystemsHeating Thermostat Overheat
Hello, There is a possibility that your boiler heat exchanger is sludged up with either limescale or rust from the radiators.
This would slow the flow down through the heat exchanger causing the boiler to overheat.
A quick repair would be to add a flushing agent to your system like fernox. This would only cure your rust (ferrous oxide) problem.
If the cause is down to limescale the heat exchanger would have to be powerflushed. Quite an expensive job.
Regards,
Nick

Nick Frost
January 2008

Automatic Answer

We may have found other answers which could help you.

Click here for Heating Thermostat Overheat

Related Questions ...

Mend error code week
1

Ravenheat CSI 120 error code 04?

I have a Ravenheat CSI 120 on which I recently (last week) replaced the diaphragm in the diverter valve. I the... [Read more]
Mend locking out central fault pcb
1

Halstead Finest Combi Boiler Locking Out?

When a hot tap is turned on and the central heating is not on or on demand, the hot water flows whenever a dem... [Read more]
Mend combi pressure overheat
1

Overheat Thermostat Tripping on Bosch 240 Combi RSF?

Hi, The overheat thermostat keeps tripping on our combi boiler. The pilot will fire, but when central heati... [Read more]
Mend boiler central heating gas boiler
4

My Potterton 80e often doesn't start up anyone know why?

My Potterton 80e gas central heating and hot water boiler often won't fire up on its own . We tend to have ... [Read more]
Mend heating temperature overheat
4

Worcester 19/24CBI Problems (Over Heating, Fail to ingite)?

Hoping that someone can shed a little light on my problem or that this may help someone in a similar position.... [Read more]
Mend combi boiler boiler repair pressure drop
1

ariston micro combi 23 water loss?

water loss from external overflow pipe on ariston micro combi 23 when heating is switched off water leaks unti... [Read more]
Mend heating central heating thermostat
1

Hot Water but no CH Potterton Netaheat Profile 30e-80e?

In the last day or so we have noticed that we are getting hot water but no Central Heating (rads are cold etc.... [Read more]
Mend potterton boiler 10
3

Potterton Profile 60E boiler keeps tripping out?

My Potterton 60E boiler will run for about 10 minutes then trip out, once it has cooled a little I can reset i... [Read more]
Mend boiler heating Potterton
5

potterton profile 50 e problem?

Hi need some help, i have a potterton profilr 50e boiler it works fine from cold but once it has heated the wa... [Read more]
Mend boiler combi overheat
2

Baxi 130HE Thermostat Overheat Problems. ?

Hi, I have a Baxi 10 HE Combi boiler and other that the usual burner box replacement i have had no troubles w... [Read more]
Mend boiler pcb fault finding
3

Potterton Suprima Fault Finding Guide?

I have a Potterton Suprima 80L. When going through the initial conditions check (fault finding guide) I get t... [Read more]
Mend fault hot water flow switch
1

Worcester 24i rsf no hot water?

I followed the fault diagnosis and replaced the flow switch. However the boiler reset kept tripping out (overh... [Read more]
Mend pilot after hot water
1

Vaillant GB 221 H pilot goes out after using hot water?

I have replaced the thermocouple and it lasted 3 days without going off. could this be over heating and trippi... [Read more]
Mend boiler radiators overheating
1

combi boiler noisy?

I have a 'Ferroli combi 77.FF boiler 75446' It continually makes a noise from the moment I switch it on, maki... [Read more]
Mend boiler heating worcester
26

How can I fix my Worcester 24i RSF combi boiler?

My Worcester Bosch 24i RSF combi boiler periodocally refuses to ignite when the hot water taps are turned on o... [Read more]
Mend Heating, Home Heating Systems

How to fix my fireplace?
Mend boiler heating pressure

Pressure Gauge on Modena 102?
Mend combi boiler leaking pressure

How can i mend my baxi combi 105a?
Mend heating system overheat

Baxi solo 30 pfl 40?
Mend baxi heating diverter valve

Baxi eco blue advance heat 30?
Mend boiler heating system error code

F 28 warning what does it mean?
Mend boiler heating expansion tank

boiler no working properly?
Mend baxi boiler 105e

Power but not activating Baxi 105e boiler?
Mend boiler heating warranty

BaxI Platinum top of the range boiler?
Mend boiler heating pcb

Baxi solo dry fire?
Mend baxi heating no ignition

Baxi Bermuda 2 inset fire?
Mend boiler heating faulty

Baxi solo 3 PFL 30?

How to mend ...

Find out how to mend just about anything howtomendit.com for free repair help, information and advice.
Mend Home Heating Systems ...

Other models...

Baxi 105Baxi 24iBaxi 30/80Baxi 552Baxi 60PFBaxi 80Baxi 80 EBaxi Bermuda 551Baxi Bermuda FireBaxi BraziliaBaxi Combi 105HEBaxi Combi 80EBaxi Combi Instant 105eBaxi Modena 102Baxi Solo 2PFBaxi Solo 3 60 PFBaxi Solo 3 PFL 40Baxi Solo 30/80Baxi Suprima 50Baxi Wentworth

Related Categories

Mend Convector Heaters
Convector Heaters
Mend Fan Heaters
Fan Heaters
Mend Oil Filled Radiators
Oil Filled Radiators

Topic

Baxi 105e Instant Boiler - Tripping Issues