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928 Air Conditioning Thermo Fan question

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5 captured repliesPartial discussion capture · Source accounts, not a confirmed diagnosis

THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

Discussion summary

YOUR RESEARCH928 Air Conditioning Thermo Fan question

Reported or suspected cause

temperature control switch ( small round device attached

Reported cause

No successful repair reported for this finding.

1
Identified cause: 0
Suspected cause: 0
Reported fixes

Read evidence and context

Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.

Discussions that report identifying a cause: 1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Reported cause · Original poster
The problem was the Temperature Control Switch ( small round device attached to the front of the radiator ).
Original post Read captured discussion
928 Air Conditioning Thermo Fan question

Frequently discussed work

Check fuses

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 1
Discussions

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Discussions that contain suggestions: 1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion
Could be that the fan is cycled by the refrigerant pressure switch to maintain a set 'head pressure' in the aircon system otherwise you may have a problem, perhaps check your fuses.
Original post Read captured discussion
928 Air Conditioning Thermo Fan question

Read full discussion summary

Leading evidence: 'temperature control switch ( small round device attached' (1 discussions report identifying this cause; no attributable repair resolution). Across 1 matching discussions, the most frequently mentioned possible cause is 'temperature control switch ( small round device attached' (1 discussions; 1 report identifying it and 0 suggest it). The most frequently discussed action is 'Check fuses' (1 discussions). For that action, 0 discussions report a resolution and 0 report an unsuccessful attempt. No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.

Source reports, not a diagnosis or a success probability. Counts refer to discussions and can overlap.

Read captured replies

1 matching discussions · 5 captured posts examined · 1 partial discussions

Compare 1 other evidence results

Check fuses

Suggestion or failed attempt

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 1
Discussions

Read evidence and context

Discussions that contain suggestions: 1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion
Could be that the fan is cycled by the refrigerant pressure switch to maintain a set 'head pressure' in the aircon system otherwise you may have a problem, perhaps check your fuses.
Original post Read captured discussion
928 Air Conditioning Thermo Fan question

Frequently discussed actions (1)

These are separate views of the same evidence. Frequency alone does not establish a fix, and these counts must not be added together.

Check fuses

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 1
Discussions

Read evidence and context

Discussions that contain suggestions: 1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion
Could be that the fan is cycled by the refrigerant pressure switch to maintain a set 'head pressure' in the aircon system otherwise you may have a problem, perhaps check your fuses.
Original post Read captured discussion
928 Air Conditioning Thermo Fan question

Reported and suspected causes (1)

These are separate views of the same evidence. Frequency alone does not establish a fix, and these counts must not be added together.

temperature control switch ( small round device attached

No successful repair reported for this finding.

1
Identified cause: 0
Suspected cause: 0
Reported fixes

Read evidence and context

Discussions that report identifying a cause: 1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Reported cause · Original poster
The problem was the Temperature Control Switch ( small round device attached to the front of the radiator ).
Original post Read captured discussion
928 Air Conditioning Thermo Fan question

Coverage and how to read this overview

Counts describe captured discussions, not unique people or a diagnosis. Author identities are not reliably stored. Exact duplicate evidence is counted once across matching discussions; one discussion counts at most once per action/state. Multiple repairs reported together remain a combination. Suggestions and failed attempts do not establish a fix. Matches cover whole discussions and can include related faults, model variants and incomplete threads.

5 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.

Porsche Forum Australia: 1 discussions

0 evidence records excluded for query context · 0 excluded by outcome qualification · 0 adjusted by outcome qualification.

0 acknowledgements have no verified action link; they do not establish a repair result.

Generation: 20261026T113718Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

Hi Everyone, I am hoping that someone can tell me if my A/C thermo fan is meant to come on EVERY time i turn the A/C on. I have a 1980 model 928. Thanks in advance. Bradley

POST 2Original post

Hi Bradley First off, nice picture of your trusty steed As a refrigeration mechanic I can tell you that the AC thermo fan or 'condensor fan' should cycle with the refrigerant compressor so as to transfer vapour compression cycle heat from the refrigerant to the environment. Basically no fan = no heat transfer. Sounds like your system is doing the right thing, no need to worry. It's getting to that time of year when the aircon gets a good work out. Keep Cool Frank

POST 3 / ORIGINAL POSTEROriginal post

Quotes source post: 2773

Hi Frank, thanks for your prompt reply and ideas. You got yourself a nice ride there too by the look of it. My thermo fan is`nt coming on every time i switch the A/C on. It does come on after the engine has warmed up after 10 mins or so even if the A/C isnt turned on. Looking at most other types of cars they all have the thermo fans come on as soon as the A/C is on and that is even if the car is cold. Not sure if there is a problem with the switch or not. Thanks again. Bradley

POST 4Original post

Hi again Could be that the fan is cycled by the refrigerant pressure switch to maintain a set 'head pressure' in the aircon system otherwise you may have a problem, perhaps check your fuses. Frank

POST 5 / ORIGINAL POSTEROriginal post

Quotes source post: 2778

Hi Everyone, The problem was the Temperature Control Switch ( small round device attached to the front of the radiator ). These models do have the thermo fan set to come on when engine is at a certain temp. New switch was $93 plus fitting. Thank you all for your help. Have a great Porsche day.

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