The short answer
A dishwasher that will not heat cleans badly and dries worse, and the fault is usually upstream of the machine — in the water it is given — rather than in the heater itself. This is commercial-duty food-service equipment installed in a kitchen or a bar rather than a home, and its duty cycle is one no domestic machine sees, so most of what goes wrong is water quality, chemical supply and maintenance rather than component failure. That is why "scale on the heating element" heads the ranking on this page, while "short or economy cycle selected" sits at the bottom of it.
What you are actually seeing
- The load is cool at the end of a full cycle
- Plastics and glasses come out soaking wet
- Greasy items are consistently worst affected
- The cycle finishes far faster than it used to
- Detergent left undissolved in the dispenser
- Not this fault: the dishes are dirty but hot — Means: a wash-performance fault — See: brama-dishwasher-cleaning-performance
- Not this fault: the cycle stops part way and will not finish — Means: a cycle fault — See: brama-dishwasher-cycle-fault
Likely causes, most likely first
- Scale on the heating element — Why here: scale insulates the element from the water, so a hard-water machine loses heating performance gradually and invisibly — Confirmed by: a chalky crust on the element and the tub, in an area with hard water
- Incoming water arriving cold — Why here: first because the machine is designed to be fed hot water and a long or cold supply run undoes everything downstream of it — Confirmed by: the tap nearest the machine runs cold for a long time before it warms
- Rinse aid empty, so nothing sheets off the load — Why here: ranks high on a wet-load complaint because drying depends far more on rinse aid than owners expect — Confirmed by: water beading and standing on plastics, and an empty rinse-aid reservoir
- Heater, thermostat or high-limit failed — Why here: last because it is the only cause here needing a technician, and because everything above imitates it — Confirmed by: a hot supply, a normal cycle, a clean element and still a cold load
- Short or economy cycle selected — Why here: not a fault at all: an eco or quick cycle deliberately runs cooler and longer or cooler and shorter, and it is the most common explanation for a sudden change — Confirmed by: the cycle that changed behaviour is a different one from the cycle in habitual use
Check in this order
- Run the nearest hot tap and time how long it takes to get hot — Because: a machine fed cold water cannot heat its way out of it on a normal cycle
- Check which cycle is actually being used — Because: an eco or quick cycle explains most sudden changes and needs no repair
- Check the rinse-aid reservoir — Because: a wet load is far more often a rinse-aid problem than a heating problem
- Look at the element and the tub for scale — Because: it is the last owner-visible cause before the heater itself is in question
Owner checks, in order
- Run the hot tap closest to the machine until it is hot, then start the cycle immediately — Tools: none — Time: a few minutes
- Select the machine normal or heavy cycle rather than an eco or quick programme and re-run a full load — Tools: none — Time: an hour or more
- Fill the rinse-aid reservoir and set it to a mid position — Tools: rinse aid — Time: a few minutes
- Look into the base of the tub at the element and the tub walls for a chalky crust, and run a descaling product if there is one — Tools: a descaler, a torch — Time: roughly half an hour
- At the end of a full cycle, open the door and feel the load and the tub wall to judge whether heat was produced at all — Tools: none — Time: a couple of minutes
- Stop condition: Stop before any test that would put a meter on live terminals.
Safety before you start
Safety
Unplug the appliance or switch off its breaker before removing any panel. A capacitor can hold a charge after the power is off. Shut the water supply off at the isolation valve before touching a hose or a fitting. Water and a live cabinet are the two hazards here and they sit next to each other. A wash cycle heats the water well above what is safe to touch. Let the machine stand after a cycle before reaching into the tub.
When to call a technician
the load is cold at the end of a full hot cycle with a hot supply the machine trips its breaker during the heat step heating is unchanged after descaling and a correct cycle
serviced under contract by a food-service engineer, against a daily and weekly routine the operator manual defines
Nearest pages
What this page does not cover
This page is generalized across every dishwasher sold under the Brama name; it does not cover a specific family, model or serial range, and it carries no part number for your unit. Where a page exists for a narrower scope than this one it is linked below, and it takes precedence over anything written here.
Links down: - [Common BRAMA Dishwasher Problems](/blog/brama-dishwasher-problems) - [BRAMA Dishwasher: Will Not Start or No Power](/blog/brama-dishwasher-wont-start) - [BRAMA Dishwasher: Will Not Drain](/blog/brama-dishwasher-drainage-failure) - [BRAMA Dishwasher: Water Leak](/blog/brama-dishwasher-water-leak) - [BRAMA Dishwasher: Abnormal Noise or Vibration](/blog/brama-dishwasher-abnormal-noise) - [BRAMA Dishwasher: Door, Latch or Seal Fault](/blog/brama-dishwasher-door-seal)
Related pages
- Common BRAMA Dishwasher Problems
- BRAMA Dishwasher: Will Not Start or No Power
- BRAMA Dishwasher: Will Not Drain
- BRAMA Dishwasher: Water Leak
- BRAMA Dishwasher: Abnormal Noise or Vibration
- BRAMA Dishwasher: Door, Latch or Seal Fault
- BRAMA Dishwasher: Controls, Display or Error Code
- BRAMA Dishwasher: Does Not Clean or Dry
Lead Appliance Repair Technician · 12 years experience
Experienced technician with 12 years specializing in washing machine and dryer repairs across all major brands.
