Geyser Problem Troubleshooter

Common Geyser Problems at a Glance

Find your problem in the first column. The last column tells you whether there's anything you can safely check before calling for help.

Geyser Not Heating Water

This is the one everyone dreads in winter. The lights on your geyser are the best clue to what's going on.

Lights on, but no hot water

If both the power and heating lights glow but the water stays cold, the heating element has most likely failed, or a wire at the element has burnt or come loose. A. O. Smith lists both as reasons to call service. It's a technician job, because the element sits behind the cover with live wiring.

No lights and no hot water

Check the switch and the MCB first. If power is fine, the thermal cut-out may have tripped. This often happens when a geyser is switched on with an empty tank. Many geysers have a reset button for the cut-out inside the cover. A technician should press it, but only after finding out why it tripped.

Lukewarm water instead of hot

First, check the knob isn't set low. Then try Symphony's crossover test: close the cold water supply to the geyser and open the hot tap. Water should stop flowing. If it keeps coming, cold water is mixing into the hot line somewhere in your plumbing.

Instant geyser giving lukewarm water

Turn the tap down a little. Usha explains that on an instant geyser, the more water flows, the lower the temperature.

Geyser Light Not Glowing

A dark geyser feels dead, but the cause is often simple. Work through these in order:

1. Is the wall switch on, and does the socket work with another appliance?
2. Has the MCB tripped?
3. Was the geyser switched on before the tank was full?
4. If all of these are fine, the thermal cut-out, thermostat, wiring or indicator bulbs need a technician.

A tripped cut-out is a warning, not just a nuisance. It's the geyser protecting itself from overheating. Resetting it without finding the cause usually means it trips again, or worse.

Water Too Hot or Coming Out as Steam

Lower the setting first, as Symphony advises. If the water stays too hot, the thermostat isn't cutting off, or the thermal cut-out isn't working. A. O. Smith lists both as reasons to call service. Switch off the geyser until it's checked.

Geyser Heats Slowly or Runs Out Too Fast

You've probably noticed it creeping up. The geyser that used to be ready in 20 minutes now takes much longer. The usual reasons:

• Scale on the heating element. It acts like a blanket, so heat takes longer to reach the water (A. O. Smith, Symphony).
• Sediment on the tank floor, especially in hard water areas.
• Low voltage at the mains. A. O. Smith lists this as a cause of slow heating.
• A geyser too small for the family. Check with our Geyser Size Finder.

Slow heating also costs more every month. See what it's adding with our Geyser Electricity Cost Calculator.

Geyser MCB or ELCB Keeps Tripping

Here's a real case from our notes. A family's geyser kept tripping the MCB a few minutes after it was switched on. The geyser was fine. The MCB was only rated 6A, too small for a 2,000 watt geyser. Once a correctly rated MCB went in, the tripping stopped.

When it trips tells you a lot about why.

What MCB does a geyser need?

A 2 kW geyser draws about 8.7A and a 3 kW one about 13A, according to Havells. Havells and Symphony specify a 16A double pole MCB. The geyser should also have its own circuit, not one shared with other heavy appliances.

Why an ELCB trip is serious

An ELCB trips when current leaks to earth, which is exactly what causes shocks. Don't keep resetting it. Switch off the geyser and get the element, insulation and earthing checked.

Electric Shock From a Geyser or Its Water

Current in geyser water usually comes from a faulty heating element, damaged insulation, poor earthing, loose wires, or moisture on live terminals. Static electricity can also give a small zap in dry weather, but never assume that's the cause.

What keeps your family safe:

• Proper earthing, checked by an electrician
• An ELCB or RCCB on the circuit. Symphony even builds one in that trips at 10mA of leakage.
• A correctly rated MCB
• Professional installation, with the terminal cover in place

Water Leaking From the Geyser

Where the water comes from tells you how serious it is.

Can a leaking tank be repaired?

Usually not. Geyser tanks generally can't be replaced on their own, so a cracked or corroded tank often means it's time for a new geyser.

Safety Valve Dripping: Normal or a Problem?

Let's be honest, a dripping valve looks like a fault. Often it isn't. Water expands as it heats, and the safety valve lets that extra pressure out as small drips. Symphony states this purging is for your safety and should not be considered a defect.

Constant dripping is different. The usual reasons are:

• A non-return valve too close to the geyser. A. O. Smith asks for it to be at least 40 feet from the inlet.
• Inlet pressure too high, common in tall buildings (Symphony, Bajaj).
• A valve clogged with scale. Lifting the lever clears salt deposits, as Symphony advises.

Why Is My Geyser Making Noise?

Each sound points to something different. Some are harmless. One means switch off now.

Bad Smell From Hot Water

Start with the glass test. Fill one glass with cold water and one with hot, away from the sink, and smell each. If both smell, the problem is your water supply. If only the hot one smells, it's the geyser.

For a geyser smell, the manuals point to:

• Water left standing for days. Symphony suggests flushing out twice the tank's capacity. A. O. Smith suggests draining the geyser before long breaks and refilling it before use.
• Organic matter in the incoming water. Treated water at the inlet helps (A. O. Smith).
• High dissolved solids reacting with the anode. A. O. Smith offers other anode options for highly conductive water through service.

Brown or Rusty Water From the Geyser

If the cold water is brown too, the colour is coming from your supply or pipes, not the geyser.

If only the hot water is brown, the anode rod is probably used up, as Symphony explains. The anode protects the tank from rust. Once it's gone, the tank itself starts to corrode, and that's how leaks begin. Get it checked early.

Low Hot Water Pressure

Work through these checks:

• Is the cold water weak too? Then it's the supply. Bajaj asks for at least 2 metres between the overhead tank and the geyser, and Symphony asks for 1.5 metres.
• Is the inlet valve fully open? Havells asks for it to stay open always.
• Do you use a shower mixer? Its filter can clog.
• Own a Symphony? Clean the cartridge strainer's top mesh with a soft brush.
• Still weak? A clogged safety valve or scale inside the tank needs a technician.

Geyser Error Codes Explained

Smart and digital geysers show a code when something goes wrong. Here's what each one means, straight from the manuals.

Havells Magnatron Error Codes

Havells Smart Geysers (App Models) Error Codes

Racold Omnis Error Codes

Symphony (SmartBath Controller) Error Codes

Don't see your brand? Other brands' codes aren't in our list yet. Check your manual or call us on 98310 15086.

What You Can Safely Check vs What Needs a Technician

A simple rule: if it's outside the geyser, you can usually check it. If it's behind the cover, leave it to a trained hand.

"Fixes" You'll See Online That We Don't Recommend

Video tutorials can make geyser repair look easy. Some of the popular tricks are risky:

• Removing the spring from the pressure valve. It disables backflow protection, and even the video's own viewers raised safety concerns.
• Removing the non-return valve. Especially risky in multi-storey buildings, where hot water can drain back.
• Opening the cover to press the reset button. There are live terminals inside, and the cut-out tripped for a reason.
• Switching on to "test" it with no water. Every manual warns against it. It burns out the element.
• Shaking the geyser to clear a blockage. It strains the wall mounting and pipe joints.

Repair or Replace Your Geyser?

Most faults are worth repairing. A new element, thermostat or gasket can give a geyser years more life. It may be time to replace it when:

• The tank itself is leaking
• Rusty water and leaks show up together
• It's over 10 years old and faults keep coming back
• The repair would cost close to a new geyser

Choosing a new one? Our Size Finder and Electricity Cost Calculator help you pick the right size and see what it'll cost to run.

How to Prevent Geyser Problems

Most of the problems above start small. A little care stops them early.

• check_circleAlways fill the tank before switching on.
• check_circleLift the safety valve lever now and then to clear salt deposits.
• check_circleDescale once a year, as Havells and Symphony recommend. More often in hard water.
• check_circleHave the heating element checked every year, as Havells advises.
• check_circleSwitch off and drain the geyser before long breaks (A. O. Smith, Bajaj, Havells, Symphony).
• check_circleKeep the earthing, MCB and ELCB in good shape.