Dometic KRA 433X 1161 User Manual (English)

Questions and Answers:

J
Joshua PhillipsAug 16, 2025
Why is my Dometic Marine Equipment running but not cooling?
- J
  joshuabennettAug 16, 2025
  If your Dometic Marine Equipment's compressor and fan (or pump) are running, but the box isn't cooling, it could be due to several reasons. First, check the fan and coil for proper airflow and ensure adequate ventilation, especially if the temperature exceeds 100°F/38°C. Also, inspect the seawater system for proper flow. Other potential causes include an incorrectly set Thermostatic Expansion Valve (TXV), which requires a technician's attention, or a low refrigerant charge, which necessitates checking for leaks and recharging the system with R-404A. A mechanical failure of the TXV could also be the culprit, requiring diagnosis and replacement by a technician.
M
Michael ChungAug 19, 2025
How to troubleshoot a Dometic KRA 433X 1161 Marine Equipment when compressor and fan do not run?
- D
  David HowardAug 19, 2025
  If the compressor and fan (or pump) of your Dometic Marine Equipment do not run, start by checking if the circuit breaker is off and turn it on or reset it if necessary. Then, check the thermostat and ensure it is set for a cooler setting. Also, the issue might be related to a High/Low pressure switch; in this case, check the Dometic control for fault codes LP or 1A and consider calling a technician.
K
Kent PottsAug 23, 2025
What to do if Dometic Marine Equipment fan runs but compressor doesn't?
- V
  vsullivanAug 23, 2025
  If your Dometic Marine Equipment fan or pump operates, but the compressor doesn't (and the high-pressure switch or thermal overload has tripped), check for low voltage to the unit, as the Klixon may be open. Also, check the fan and coil for proper airflow to ensure adequate condenser cooling. If the temperature is above 100°F/38°C, ventilate the area. Inspect the seawater system as well. The problem might be related to a High/Low pressure switch, requiring you to check the Dometic control for fault codes LP or 1A and consult a technician.
S
Seth ChambersAug 27, 2025
How to fix Dometic Marine Equipment with unlit displays?
- M
  Maxwell SweeneyAug 27, 2025
  If the displays on your Dometic Marine Equipment are not lit, check the circuit breaker first to ensure that power is connected. Then, inspect all connections for any looseness. Also, verify that the voltage input of the control is correct. If these steps do not resolve the issue, consult a technician.
H
hcooperAug 30, 2025
Why does my Dometic KRA 433X 1161 Marine Equipment freeze and stop cooling?
- A
  Anna AndradeAug 31, 2025
  If your Dometic Marine Equipment system starts to cool, but stops as plates freeze, check the sight glass for moisture. Yellow indicates moisture; green indicates a dry system.
B
Brooke MeyerSep 3, 2025
How to improve cooling of Dometic KRA 433X 1161 box?
- C
  Cole SanchezSep 3, 2025
  If your Dometic Marine Equipment is not cooling the box sufficiently, turn the unit OFF and defrost it according to the instructions in 'Defrosting'. Ensure that the thermostat is properly set. Minimize the amount of time the box is open to prevent warm air from entering. If you've recently added many warm items, allow the unit time to cool them. Replace any poor seals and ensure there's a drain plug. Other potential issues include an improperly set Thermostatic Expansion Valve (TXV), low refrigerant charge, high condensing temperature (introduce cooler air into the compartment), improperly mounted temperature sensor, moisture in the system, or inadequate design.
J
jasonwatsonSep 7, 2025
What causes Dometic KRA 433X 1161 compressor to run but seawater pump to fail?
- T
  Theresa AlvaradoSep 7, 2025
  If the compressor operates, but the seawater pump doesn’t for your Dometic Marine Equipment, turn on or reset the pump breaker. Check the pump relay and pump relay trigger.