Pool heater trouble comes with plenty of guesswork, and an unhelpful answer can waste a good swimming weekend. The aim of this page is the opposite: direct, plain replies to what homeowners around Edmonton most often ask after looking up “Jandy pool heater not turning on”. Each answer on pool heater repair stands alone, so skim the headings, read what matters to you and come back whenever another question pops up.
What size pool heater do I need?
Heater size is measured in BTU output for gas and electric models, and in a similar capacity rating for heat pumps. The right number depends on pool surface area, how many degrees you want to raise the water, how much wind the pool sees and whether a cover is used. A pool heated only for weekends needs more capacity than one kept warm all season. An undersized heater runs constantly and still struggles, while an oversized one costs more up front and may cycle often. The rating plates and sizing charts supplied by manufacturers guide the choice, and a technician can apply them to your site.
Should you reset a pool heater that shows a fault code?
A fault code is the heater’s way of naming the circuit that stopped it. Typical families include flow or pressure problems, water temperature sensor errors, ignition or flame faults on gas models, over-temperature trips and, on heat pumps, pressure or defrost faults. The exact wording and number differ between manufacturers, so the manual or the label inside the cabinet is the true guide. Write down the code, what the heater was doing when it appeared and the weather. That record helps a technician, because it separates a brief nuisance from a recurring fault.
What can you check yourself when a pool heater will not turn on?
Start with the simple things. Make sure the pump is running and the filter is not clogged, since most heaters will not start without good water flow. Confirm the heater’s thermostat is set above the current pool temperature, that any service switch is on and that no valve on the equipment pad was left half closed. If a pool automation panel controls the heater, check that the heater is enabled there. Look at the breaker and reset it a single time if it has tripped. Do not open the cabinet or touch gas parts, and if you smell gas, leave the area and call from a safe distance. Anything beyond these checks is a job for a technician.
What does a pool heater heat exchanger leak mean?
A leaking heat exchanger means water is escaping from the tubes themselves, usually through a pinhole, a crack or a failed joint. Common causes are corrosion from low pH or aggressive water, long-term scale that overheats the metal, freeze damage after a missed winterizing and ordinary fatigue. Signs include water inside the combustion chamber, rust-colored stains, steam at start-up and a heater that keeps losing efficiency. Patching tubes is rarely a lasting repair. Most exchangers are replaced as a unit, and your technician can tell you whether that makes sense for the age and model.
What does a technician do when a heater has power but never fires?
With power present and flow confirmed, a technician works through the starting sequence in order. They read any fault code, then check the temperature reading, the flow switch, the high-limit safety and the signals leaving the control board. On a gas heater they watch an ignition attempt and test the igniter, flame sensor and valve operation; on an electric or heat pump unit they check the contactor, relays and compressor circuit. Each step either clears a part or points to the one at fault. Gas connections and valves are handled only by a qualified technician, and a safety switch should never be bypassed just to see whether the heater starts.
What does a pool heater flame sensor do?
A flame sensor is a thin metal rod that sits in the burner flame and tells the control board that combustion is happening. The flame carries a tiny electrical signal, and if that signal disappears the board closes the gas valve within seconds. Over time the rod collects a film of residue or corrosion, which weakens the signal, so the burner may light and then shut off almost immediately. Cleaning or replacing the sensor, along with checking its wire and grounding, usually resolves it. This is work for a technician, because it happens inside the gas section.
How can I reduce how long my pool heater runs?
The surest way to shorten run time is to stop heat from escaping. A cover over the pool when it is not in use makes a big difference, as does a windbreak such as a fence or hedge. Set the thermostat to the lowest temperature you will enjoy, and avoid large swings up and down. Heat the pool on a schedule that matches when you swim rather than all day. Keep the heater maintained, because scale and dirty burners waste energy. Even a few degrees of difference in the set point can change energy use noticeably.
How do you decide between repairing and replacing a pool heater?
The decision rests on a few questions. How old is the heater, and how often has it needed repairs? What failed: an inexpensive part, or the heat exchanger or compressor that makes up much of the unit’s value? Are parts still available? Is it efficient and sized correctly for your pool? A single modest repair on a heater that otherwise runs well is usually sensible. Repeated failures, a leaking exchanger, heavy corrosion or a repair that approaches the cost of a new unit all point toward replacement.
How do you confirm a pool heater technician serves your neighborhood?
When you call, give us your address or nearest cross streets and the type of heater you have, and we can tell you right away whether we cover Edmonton and what is realistic. Travel time affects scheduling more than most people expect, so it is fair to ask how soon a first visit and a return for parts would fit. Rural properties and gated communities may need a little extra planning for access. We would rather say honestly that an address is outside our area than promise something we cannot deliver.
Pair good habits with a professional check
Simple routines at home go a long way, and a periodic visit catches what you cannot see. Together they keep your pool heater in steady shape year after year. Call (587) 853-6668 to plan the next check with Gas Fireplace Edmonton.
