Should the radiator fan be running all the time?

[Catalyst_delhi]

Originally Posted by IndigoXLGrandDi

I got the AC Blower Motor Assembly replaced on Friday at Local Electrician. It cost me Rs. 4500/- + Labour Rs. 600/-.

After that I noticed strange behaviour of Radiator Fan.

When the AC is switched ON (Compressor), the Radiator Fan also switches ON (even though the Engine Temperature is at C) along with Condenser Fan.

This used to not happen before.

When I showed this to that electrician, he said "Its normal. The Radiator Fan and Condenser Fan are in series (?), so the RF will come on with CF even if the Engine Temp. is Cold.

I suspect the battery would drain faster since the Radiator Fan is working continuously and drawing current from the Alternator.

Please guide me.

Should I replace any of the following Relays placed under the bonnet behind Battery--
1) AC Condenser Fan Relay,
2) Series Fan Relay,
3) Radiator Fan Relay (Don't remember correctly)?

EDIT:-
The Thermostat Valve was replaced @ 7-8K Kms ago.

The Fan must come on with the AC to cool the AC condenser.It is normal. What car is this on?

[IndigoXLGrandDi]

Originally Posted by Catalyst_delhi

The Fan must come on with the AC to cool the AC condenser.It is normal. What car is this on?

I am talking about Radiator Fan that comes on with Condenser Fan i.e. both the fans are switched on when the AC is turned on.

Also, I forgot to add in the previous post that
Initially the Radiator Fan used to switch on only when the Engine Temp. Gauge tried to cross the Half Mark. When the Engine used to be cold, the Radiator Fan remained off.

But now the Radiator Fan switches on after 1-2 mins of switching on the AC Compressor irrespective of Engine Temp. and Surrounding Climate and remains on till the AC is switched off (if the engine is cold) and till the engine temp. comes under control (if the engine is hot - half mark)

One more thing--
IIRC, when the Radiator Fan switches ON (when the Engine Temp tries to cross Half Mark), the AC Compressor should cut-off to ease the load off the engine and switch back on when the Radiator Fan cuts-off.
But in this case, the Radiator Fan is switched on as well as AC Compressor. How will the load on Engine be eased off?

Expert please correct me if wrong.

[IndigoXLGrandDi]

Sorry forgot to mention the car in question is Tata Indigo LS May 2004 IDI (not TDi) which has covered 2,34,XXX Kms.

Mods please merge this post with the previous one.
Thanks.

[Catalyst_delhi]

Originally Posted by IndigoXLGrandDi

Sorry forgot to mention the car in question is Tata Indigo LS May 2004 IDI (not TDi) which has covered 2,34,XXX Kms.

Mods please merge this post with the previous one.
Thanks.

Since the fans are coming on , the relays must be working, I would now doubt if the mechanic had wired the condensor fan with the radiator fan. But you also said that the radiator fan works at temp > half hence I think all is ok.

I do not see any problems , the battery will not run out as at the max it should be 25 - 30 amps which is ok. check this working with a similar car to be 100%.