Troubleshooting and Test Functions
Temperature Limit Exceeded
Temperature Limit Exceeded
| The temperature of one of the |
| The processor continually monitors the temperature of the drive circuits on |
| the LPM board. If excessive current is being drawn for long periods, the |
| temperature of the circuits increases. If the temperature exceeds the upper |
| limit of 95 ºC, the error message is generated. |
Probable Causes | • High friction (partial mechanical blockage) in the pump drive assembly. |
| • Partial blockage of the flowpath in front of the damper. |
| • Defective pump drive assembly. |
| • Defective LPM board. |
Suggested Actions | ❏ Ensure the capillaries and frits between the pump head and damper inlet |
| are free from blockage. |
| ❏ Ensure the outlet valve is not blocked. |
| ❏ Remove the pump head assembly. Ensure there is no mechanical blockage |
| of the pump head assembly or pump drive assembly. |
| ❏ Exchange the pump drive assembly. |
| ❏ Exchange the LPM board. |
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