Question 1

the normal cycle seems to run forever, like over 3 hours, is that right?

Accepted Answer

DIAGNOSIS Cycle times are excessively long. This is normal operation for sensor cycles. The LDTS5552S uses a soil sensor to adjust time, temperature, and water usage. FIX The unit is working as designed. To shorten cycle times, use a non-sensor cycle. Select Heavy Wash or Speed Wash for a fixed, predictable duration. Heavy Wash is approximately 2 hours. Speed Wash is 1 hour but is for lightly soiled loads only. IF THAT DIDN'T WORK If a fixed cycle like Heavy also runs excessively long, the water inlet may be restricted. Low water fill time extends cycle duration. Check the water supply valve and inlet hose for adequate flow. HEADS UP The sensor determines soil by measuring water turbidity. Using rinse aid is critical for sensor accuracy and can indirectly affect cycle efficiency. Ensure the rinse aid dispenser is filled.

Question 2

water is not draining at the end of the cycle, there's standing water in the bottom.

Accepted Answer

DIAGNOSIS Standing water in the tub after a cycle. This is a drain system obstruction or pump failure. FIX First, check for a clog in the drain hose. Disconnect power. Disconnect the drain hose from the sink drain or garbage disposal. Check for kinks and clear any debris. Second, check the drain pump. Remove the filter assembly and inspect the sump for large debris obstructing the pump impeller. IF THAT DIDN'T WORK The drain pump motor may have failed. You can test it. Enter diagnostic mode (press Soil Level and Power for 3 seconds). Navigate to the drain test (code d1) using the Cycle Select button. Press Start. If you do not hear the drain pump run, the motor or its wiring is faulty. HEADS UP Never use drain cleaning chemicals like Drano. They can damage the plastic tub and seals. Use only manual removal or a wet/dry vacuum to clear clogs from the hose.

Question 3

the control panel buttons don't respond or light up, the whole thing is dead. checked the outlet and breaker.

Accepted Answer

DIAGNOSIS The unit has no power. The outlet and breaker are confirmed good. The issue is internal: a blown thermal fuse or a failed main control board. FIX Check the thermal fuse (also called a thermal cutoff). It is located on the heating element housing. Disconnect power. Access the heating element from below. Use a multimeter to test the thermal fuse for continuity. If it has no continuity, it is blown and must be replaced. IF THAT DIDN'T WORK If the thermal fuse is good, the main control board has likely failed. The control board receives household power directly. If it fails, no power reaches the display or controls. HEADS UP A blown thermal fuse indicates an overheating event. Before replacement, verify the heating element for a short to ground and that the high-limit thermostat is functioning. Otherwise, the new fuse will blow again.

Question 4

getting an le error code on my lg ldts5552s, what does that mean and how do i fix it?

Accepted Answer

DIAGNOSIS The display shows LE (Leak Error). The leak sensor in the base pan has detected water. This triggers an immediate stop to the cycle. FIX First, check for actual leaks. Remove the lower access panel (two screws at the bottom front). Inspect the base pan for standing water. Dry it completely with towels. Check supply line, drain hose, and door gasket for obvious leaks. Second, reset the error. Turn off power at the breaker for 5 minutes. Restore power. The LE code should clear. IF THAT DIDN'T WORK The leak sensor itself may be faulty or the wire harness connector may be corroded, sending a false signal. The sensor is a small plastic module located in the base pan. HEADS UP An LE error will often be accompanied by a PF code after a power reset. Clear the PF code as described in its own procedure after addressing the leak.

Question 5

it won't start when i press the start button, just beeps once. all the lights are on.

Accepted Answer

DIAGNOSIS The control panel is responsive but the unit beeps and will not start. This is a door latch or child lock issue. FIX Ensure the door is fully latched. Open and firmly close the door until you hear a definitive click. Check if Control Lock is active. Press and hold the Delay Start button for 3 seconds. The Control Lock light should turn off. Now try pressing Start. IF THAT DIDN'T WORK The door switch assembly may be faulty. The main control board will not enable a cycle if it does not receive the 'door closed' signal. The switch is part of the door latch mechanism. HEADS UP The unit will also beep and not start if a cycle was previously paused. You must cancel the paused cycle by holding the Power button, then select a new cycle and press Start.

Question 6

dishes are still wet and spotted after a normal cycle, nothing seems to be drying.

Accepted Answer

DIAGNOSIS Dishes are wet and spotted at cycle end. The most likely cause is a disabled heating element or incorrect rinse aid setting. FIX First, ensure the heating element is enabled. Press and hold the Heated Dry button for 3 seconds. The indicator light should turn on. Run a Sanitary or Heavy cycle, which uses the highest final dry temperature. Second, check and fill the rinse aid dispenser. Adjust the rinse aid setting to level 4 or 5 via the dial inside the dispenser cap. IF THAT DIDN'T WORK The high-limit thermostat may have failed, preventing the heater from energizing. This is a thermal safety device that requires a multimeter to test for continuity. HEADS UP For plastic items, use the Top Rack Only cycle with Heated Dry. Plastic does not retain heat like ceramic, so condensation drying is less effective. Always load plastics on the top rack.

Question 7

my lg dishwasher is making a loud grinding noise during the wash cycle, sounds like it's coming from the bottom.

Accepted Answer

DIAGNOSIS A loud grinding noise from the wash tub. The most common cause is a foreign object caught in the wash arm or pump assembly. FIX Inspect the lower spray arm and pump area. Remove the lower rack. Manually rotate the lower spray arm to check for obstruction. Remove the filter assembly (twist and lift the coarse filter, then lift out the fine filter). Check the sump area below for debris like glass, bone, or utensil fragments. Clear any debris. IF THAT DIDN'T WORK The noise may be from the drain pump impeller. A broken impeller blade or worn pump motor bearing causes grinding. This requires accessing and inspecting the drain pump, located behind the front access panel at the bottom of the unit. HEADS UP Run a diagnostic test. Press and hold the Soil Level and Power buttons simultaneously for 3 seconds. The unit will enter self-test mode. Listen during the drain pump test (code d1) and wash pump test (code w1) to isolate the faulty component.

Question 8

lg dishwasher ldts5552s just shows pf on the display, what is that? it won't run any cycle.

Accepted Answer

DIAGNOSIS The display shows PF (Power Failure). The control board detected a power interruption during a cycle. FIX Clear the PF code. Press and hold the Cycle Select button for 3 seconds. The PF display should clear. Select a new cycle and press Start. The dishwasher will reset and should operate normally. IF THAT DIDN'T WORK The power interruption may have caused a lockout. Perform a hard reset. Turn off the circuit breaker for the dishwasher at your home's main electrical panel for 1 full minute. Turn it back on. This clears the control board memory. The PF code should be gone. HEADS UP Frequent PF codes indicate an unstable power supply or a faulty control board. If it recurs without a home power outage, the control board may need replacement.

LG LDTS5552S Top Control Dishwasher

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