Common problem
Air Conditioner Not Turning On in Modbury Heights
A dead unit on a 40-degree day is the worst call in air conditioning. If your air conditioner is not turning on, we find the fault fast. We cover Modbury Heights and the foothills streets around it every week, and we carry the test gear to diagnose on the spot rather than guess.
In detail
Why Your Aircon Will Not Start
A no-start fault usually comes down to power, controls or a failed component. Many causes are cheap to fix, so we work through them cheapest first and tell you where the problem sits before you commit to anything.
Power supply
Tripped breakers, a blown fuse or a switched-off isolator cut the whole system dead. We check the switchboard and the outdoor isolator first, because the fix is sometimes that simple.
Thermostat and controls
Flat batteries, a knocked setting or a failed wall control can leave a perfectly healthy unit silent. It happens more than you would think, where older thermostats have run for years without a battery change.
Capacitors and contactors
The capacitor gives the compressor and fan their starting kick, and it is the most common genuine failure we see. It is a small part and a quick swap once we have confirmed it.
Control boards
A burnt or water-damaged board stops everything, indoor and outdoor alike. Boards cost more, so we test everything else before we condemn one, and we quote the replacement in writing.
Checklist
What You Can Safely Check First
A few checks take two minutes and cost nothing:
- Check the power point and the isolator switch near the outdoor unit.
- Look at your switchboard for a tripped aircon breaker, and reset it once.
- Replace the thermostat batteries if your wall control takes them.
- Confirm the unit has not been set to a timer or off mode by accident.
If the system stays dead after that, stop there. Anything past the switchboard involves live electricals and refrigerant, and that is licensed work under ARC Licence L162586, RAC01 - Full Refrigeration and Air Conditioning Licence.
Do not wait on this
When to Call for Air Conditioning Repairs
Call us when the breaker trips again after a reset, when you can smell burning, or when the unit is simply silent with power confirmed. Those signs point past the easy fixes.
Pushing reset repeatedly on a short-circuiting system makes the fault worse. We offer 24/7 emergency availability, and urgent issues get a Within-the-Hour Response where availability allows.
How it works
How We Diagnose a Dead System
We work through the system in a set order, so nothing gets guessed:
- 01
Step 1
Confirm power arrives at the unit, from the switchboard through to the isolator.
- 02
Step 2
Test the thermostat and control wiring for a signal.
- 03
Step 3
Check the capacitor, contactor and motor windings with proper test gear.
- 04
Step 4
Inspect the control board and report exactly what we find.
You get Fixed Upfront Pricing before any repair starts, so there are no hourly rates and no bill shock. If a fault comes back because of workmanship, our Lifetime Labour Warranty means we return and fix it at no cost.
Common problems
No-Start Faults in Older Modbury Heights Homes
Plenty of the homes here date to the 1970s and 1980s build-out, single-storey brick and brick-veneer on generous blocks. Some are running their second or even third aircon system.
Ageing wiring, sun-hardened isolator enclosures and tired capacitors all show up as no-start faults in systems of that vintage. We still source parts for older units, and if yours is past economic repair, we will say so and quote a replacement honestly instead of chaining repairs.
Why locals call us
Why Households Here Call Us
Local and fast
Fixed price first
Licensed for refrigerant
Ten years in the trade
New to us? Take $50 off first service. Pensioner households get a 10% pensioner discount, and Humm interest-free finance is available for larger jobs like a full system swap.
Good to know
Dead Aircon Questions From Modbury Heights Households
Why would an air conditioner suddenly stop turning on?
Common causes include a tripped breaker, a failed capacitor, a dead thermostat battery or a burnt control board, and we test each in order so you only pay for the real fault.
Can I reset my aircon myself before calling?
Yes, check the power point, the switchboard and the thermostat settings first, and if the unit stays dead after that, leave the electrical testing to a licensed technician.
How fast can you get here when the system is dead?
We run 24/7 emergency availability across Modbury Heights and urgent issues get a Within-the-Hour Response, where availability allows, so call and we will confirm a time.
Is a dead unit always a write-off?
No, most no-start faults trace back to a capacitor, contactor or board that we can replace, and we will tell you honestly if replacement beats another repair.
Get Your Air Conditioner Running Again Today
A silent system will not fix itself, and summer will not wait for it either. Call (08) 8246 6282 now, tell us what the unit is doing, and we will book a diagnosis with a fixed price quote before any work begins.
- Fixed Upfront Pricing
- Lifetime Labour Warranty
- Fully licensed and insured
- 24/7 emergency service
$50 off first service for new customers.
Fixed quote request
Tell us what the system is doing
We ring back to confirm a time. Or call (08) 8246 6282 now.