If the chiller control panel is showing normal but you have an alarm status (red light, audible buzzer, and the alarm output which indicates water protect warning on the laser control panel) it can be a few things. We will explore the basic operation of the chiller's electrical systems and some things to check, as well as information on maintaining and repairing the unit. |
V1 Beeping Alarm Reasons (Flow only)
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V2 Beeping Alarm Reasons
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V1 Chiller Red Alarm Light ON Reasons
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Here is a video explaining the systems of the chiller and some thinks to look for when troubleshooting your 5000 series chiller
Here is the wiring diagram for the V1-CW5000 series chiller
Alarm Description | Troubleshooting Videos |
E1 Alarm indicates a High Ambient Air temperature. This could be caused by:
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E2 Alarm indicates a High Water temperature. This could be caused by:
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E3 Alarm indicates a Low Water temperature. This could be caused by:
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E4 Alarm indicates a Room Temperature Sensor Failure. This could be caused by:
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E6 alarm stands for water flow alarm. When the alarm is triggered, the alarm code and the water temperature will be displayed alternatively with beeping. In this case, users can stop the beeping by pushing any button, but the alarm code can’t be removed until the alarm conditions are eliminated.
Water circulation is normal, but chiller still alarms.
Please open the cover of the chiller to check the water flow switch.
Cut off the four wires, then connect red and red wire, connect black and yellow wire without water flow switch, then check if the alarm will stop after restart the chiller.
A good check to perform when getting an E6 Flow alarm is to actually see if the flow from the pump matches the documentation. To perform the test, you will need a gallon jug and a stopwatch (Smartphone app). Make sure the chiller is full, even beyond the green line so that there is a gallon of water to spare.1. Turn the Chiller Off2. Disconnect the Inlet Hose off the laser machine and place into an empty gallon jug3. Prepare the stop watch. Turn the Chiller on4. When water starts flowing into the Jug, start the timer5. Stop the chiller and stopwatch when the jug is nearly full (1 Gallon of water in the jug)6. Compare the stopwatch time to the values in the table below
Chiller Model Peak Flow Rate L/Minute (gal/minute) Fastest Time Target Time CW-5000 10L/min (2.65gal/min) 22.64 seconds Under 35 Seconds CW-5200 13L/min (3.43gal/min) 17.5 seconds Under 30 Seconds
Please connect a water hose between water inlet and outlet on chiller to check the water circulation, like below:
Does alarm stop?
If alarm stops, so maybe the water hose in the laser machine was blocked somewhere, please check like below:
If alarm continues, check if the water circulation is normal from the water hose between water inlet and outlet on chiller (Abnormal condition—intermittent water circulation or without water circulation).
CHILLER | PUMP | IMAGE | WATTAGE | CURRENT | MAX FLOW | MAX LIFT | SOURCE |
S&A G SERIES | P2430 | 30 | 1.6A | 10L/MIN | 10M | LINK | |
S&A H SERIES | P2450 | 50 | 2A | 13L/MIN | 12M | LINK |
CHILLER | PSU MODEL | IMAGE | VOLTAGE | CURRENT | SOURCE |
S&A G SERIES | GM42-240160-D | 24 | 1.6A | ||
S&A H SERIES | GM48-240200-D | 24 | 2A | ||
S&A I SERIES | GM120-2400500-D | 24 | 5A |
CHILLER | SENSOR | IMAGE | VOLTAGE | TYPE | SOURCE |
S&A G, H, AND I SERIES | HL-30 | 24 | HALL EFFECT | LINK |
CHILLER | CONTROLLER | IMAGE | DEFAULT SETTING | SOURCE |
CW 5000 SERIES | T-503 | INTELLIGENT |
Parts Replacement Videos
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Parts Replacement Videos
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(Be sure to get the fuse from the current socket just in case the new one doesn't have a fuse in it. there is also usually a spare fuse in the toolbox, just in case)
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Here are some additional resources for the 5000 series chiller