Commercial Dishwasher Repair Service
Dish machine not reaching temperature, not draining or leaving dishes dirty? ALAS Appliance Repair repairs commercial undercounter, door-type and conveyor dishwashers, glasswashers, pot washers and booster heaters for restaurants, hotels and senior living kitchens across Dallas–Fort Worth.
- High-temp and low-temp machines
- Written quote before work begins
- After-hours emergency service
- 90-day repair warranty, 6 months for members
Business Profile
Book Dishwasher Repair
Dish Machine Repair That Keeps the Dish Room Moving
When the dish machine goes down, clean plates, glasses and pans run out fast, and a machine that isn’t sanitizing correctly is a health inspection problem. A commercial dishwasher is a wash system, a rinse system and, on high-temp machines, a booster heater working together, and each can fail in its own way. ALAS Appliance Repair has repaired commercial equipment in Dallas–Fort Worth since 2019. We find the actual cause, give you a written quote, and start the repair once you approve it.
We work on almost all commercial dishwasher brands sold in the U.S., including Hobart, Champion, Jackson, CMA, Meiko, Insinger, Stero, Moyer Diebel, Fagor, Jet-Tech, Noble and American Dish Service.
Common problems
What’s Wrong With Your Commercial Dishwasher?
These are the dishwasher problems we see most often in Dallas–Fort Worth businesses, with the causes a technician checks and a quick, safe check you can do before you call.
| Symptom | Common causes a technician checks | Guide |
|---|---|---|
| Not reaching final rinse temperature | Failed booster heater element or thermostat, undersized booster, low incoming hot water temperature, scale on elements, failed contactor | Check the final rinse gauge during a cycle and note the building’s hot water temperature at a nearby sink.Possible causes a technician checks: Failed booster heater element or thermostat, undersized booster, low incoming hot water temperature, scale on elements, failed contactor Schedule a diagnosis |
| Dishes coming out dirty or spotty | Clogged wash arms or jets, dirty strainers or scrap screens, low wash temperature, weak wash pump, empty or wrong detergent, hard water scale | Pull and clean the wash arms and strainers. Blocked jets are the most common cause of dirty dishes.Possible causes a technician checks: Clogged wash arms or jets, dirty strainers or scrap screens, low wash temperature, weak wash pump, empty or wrong detergent, hard water scale Schedule a diagnosis |
| Machine won’t fill | Water supply off, failed fill valve or solenoid, door switch, float or level sensor, clogged inlet strainer | Check that the water supply valves are open and the door is fully closed.Possible causes a technician checks: Water supply off, failed fill valve or solenoid, door switch, float or level sensor, clogged inlet strainer Schedule a diagnosis |
| Machine won’t drain | Clogged drain line, failed drain pump or drain valve, blocked scrap basket, stuck overflow tube | Empty and clean the scrap basket and check the floor drain for backup.Possible causes a technician checks: Clogged drain line, failed drain pump or drain valve, blocked scrap basket, stuck overflow tube Schedule a diagnosis |
| Leaking water | Worn door gaskets, damaged conveyor curtains, pump seal, tank drain or hose leaks, overfilling | Check where the water appears first: under the door, at the curtains or under the machine.Possible causes a technician checks: Worn door gaskets, damaged conveyor curtains, pump seal, tank drain or hose leaks, overfilling Schedule a diagnosis |
| Conveyor not moving or racks jamming | Failed drive motor or gearbox, broken pawl bar, limit switch fault, rack or tray jam | Turn the machine off and clear any rack or tray caught in the conveyor before restarting.Possible causes a technician checks: Failed drive motor or gearbox, broken pawl bar, limit switch fault, rack or tray jam Schedule a diagnosis |
| Detergent or rinse aid not dispensing | Empty containers, kinked or blocked tubing, dosing pump failure, missing signal from the machine | Many chemical dispensers belong to your chemical supplier. We can check whether the machine is sending the signal correctly.Possible causes a technician checks: Empty containers, kinked or blocked tubing, dosing pump failure, missing signal from the machine Schedule a diagnosis |
| Cycle won’t start or error codes | Door switch, float or level sensor, thermostat, timer or control board fault | Write down any error code and the model number before resetting the machine.Possible causes a technician checks: Door switch, float or level sensor, thermostat, timer or control board fault Schedule a diagnosis |
Commercial Dishwasher We Repair
Commercial dishwasher repair for restaurants, hotels, senior living and other facilities.
Undercounter dishwashers
High-temp and low-temp undercounter dish machines for bars and small kitchens.
Door-type dishwashers
Upright and corner door-type machines, including hoods, door switches and springs.
Conveyor and flight-type machines
Rack conveyors, drive motors, pawl bars, curtains and tank heat.
Glasswashers
Bar glasswashers, including rotary and undercounter models.
Pot and utensil washers
Pot, pan and utensil washers for back-of-house dish rooms.
Booster heaters
Built-in and standalone booster heaters, elements, thermostats and contactors.
Wash and rinse systems
Wash pumps, rinse valves, arms, jets and fill valves.
Controls and door switches
Timers, control boards, float switches, thermostats and door switches.
Repair or replace
Repair or Replace?
Pumps, valves, elements, door switches and controls are usually worth repairing on a commercial dishwasher. Replacement is worth discussing when the tank or frame is corroded or the machine no longer keeps up with your volume.
Usually worth repairing
- A pump, fill valve or drain valve has failed
- A heating element, thermostat or contactor has failed
- Door switches, gaskets or curtains are worn
- The tank and frame are in good shape
Worth weighing carefully
- The tank or frame is badly corroded
- The booster is undersized for your volume
- Repairs keep repeating on the same machine
- The machine no longer keeps up with your volume
Not sure which way to go? Book a diagnosis
Urgent repair
Dish Machine Down During a Rush?
Clean wares run out quickly when the dish machine stops. These steps keep you serving safely while we diagnose it. After-hours and emergency service is available at an additional charge.
How it works
How Dishwasher Repair Works
Call or book online
Tell us the type of machine, high-temp or low-temp, the brand and model, and what it is doing. A photo of the data plate helps us bring the right parts.
On-site diagnosis
A technician checks the wash and rinse systems, booster heater, fill and drain, and controls, so the real cause is found instead of guessed.
Written quote and approval
You receive a written quote for the repair. The diagnostic visit is billed separately, and no repair work begins until you approve the quote.
Repair and verify
We complete the repair, run the machine through full cycles and confirm wash and rinse temperatures are where they need to be.
Related
More for Commercial Kitchens and Facilities
Other ALAS commercial services.
Learn more
Commercial cooking equipment repair
Ranges, ovens, fryers, griddles and steam tables.
Learn more
Commercial reach-in refrigerator repair
Reach-ins, prep tables, undercounter and bar refrigeration.
Learn more
Commercial maintenance plans
Scheduled maintenance and priority service for restaurants, hotels, senior living and other facilities.
Where we work
Commercial Dishwasher Repair Service Area
ALAS provides commercial dishwasher repair for restaurants, hotels, senior living communities and other businesses in Plano, Frisco, McKinney, Allen, Prosper, Lucas, Parker, Richardson, Dallas, Highland Park, University Park, Coppell, Flower Mound, Southlake, Westlake, Colleyville, Keller, Grapevine, Argyle and Trophy Club, and across the Dallas–Fort Worth area.
Commercial Dishwasher Repair FAQs
Under the FDA Food Code, most high-temp dish machines need a final rinse of at least 180°F, and some single-tank, stationary-rack machines need at least 165°F. Dish surfaces should reach 160°F. Check your machine’s data plate for its exact requirement.
High-temp machines sanitize with very hot rinse water, usually supplied by a booster heater. Low-temp machines sanitize with a chemical sanitizer at lower water temperatures, so they depend on correct chemical dosing.
A booster heater raises building hot water, often around 110°F to 140°F, up to the final rinse temperature a high-temp machine needs. An undersized or failing booster can’t keep up, so rinse temperatures drop during busy periods.
The most common causes are clogged wash arms or jets, dirty strainers and scrap screens, low wash temperature, a weak wash pump, empty or incorrect detergent and hard water scale.
A blocked scrap basket, a clogged drain line, a stuck overflow tube or a failed drain pump or drain valve are the usual causes.
Leaks usually come from worn door gaskets, damaged curtains on conveyor machines, a failing pump seal or a loose hose or tank drain.
Many chemical dispensers are owned and serviced by your chemical supplier. We repair the dish machine itself and can check whether it is sending the correct signal to the dispenser, then coordinate with your supplier if the dispenser is at fault.
It depends on your water hardness and how much the machine runs. Scale insulates heating elements and blocks jets, so follow the manufacturer’s deliming schedule, and delime more often in hard water areas or when you see white buildup.
Yes. If the machine isn’t reaching sanitizing temperature or wash performance is poor, we diagnose the cause and repair it so the machine meets its required temperatures again.
Yes. Our commercial service hours are 8 AM to 7 PM, and after-hours and emergency service is available at an additional charge. For an after-hours emergency, call us directly so we can arrange a technician.
Every call starts with an on-site diagnosis. The technician finds the cause and gives you a written quote for the repair. The diagnostic visit is a separate charge from the repair, and no repair work starts until you approve the quote.
Repairs carry a 90-day warranty, or 6 months for commercial maintenance plan members. If your equipment is still under the manufacturer’s warranty, check with the manufacturer first.
We work on almost all commercial dishwasher brands sold in the U.S., including Hobart, Champion, Jackson, CMA, Meiko, Insinger, Stero, Moyer Diebel, Fagor, Jet-Tech, Noble and American Dish Service. If you aren’t sure what you have, send us a photo of the data plate.
Yes. ALAS offers commercial maintenance plans for restaurants, hotels, senior living communities and other facilities. See our commercial plans page or call us to talk through your equipment.
We serve businesses in Plano, Frisco, McKinney, Allen, Prosper, Lucas, Parker, Richardson, Dallas, Highland Park, University Park, Coppell, Flower Mound, Southlake, Westlake, Colleyville, Keller, Grapevine, Argyle and Trophy Club, and across the Dallas–Fort Worth area.