Fault | Cause | Remedy |
|
|
|
HTI lamp dark after ignition | Thermofuse in ballast | Switch on unit for cooling |
| or in lamp housing has reacted | (without switching on HTI lamp). |
|
| Allow 2 minutes for cooling off, then briefly switch |
|
| off and on with mains switch. |
| Ventilation fans not operating | Call service engineer. |
|
|
|
Master Control Knob not in “0” position | Turn Master Control Knob to “0” position | |
| Electronics disturbed | Carry out mains reset. |
|
| Switch unit off for approx. 30 seconds. |
|
| Then switch on again and start new ignition attempt. |
|
| If this fails, call service engineer. |
| HTI lamp defective | Replace HTI lamp |
|
| (experienced personnel only). |
| Fuse defective | Call service engineer. |
|
|
|
Keyboard illumination and/or display dark | Control voltage failure | Call service engineer |
|
|
|
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