FULL SIZE ELECTRIC CONVECTION OVENS - TROUBLESHOOTING
SYMPTOMS |
| POSSIBLE CAUSES |
|
|
|
No power to oven controls. | 1. | Main circuit breaker OPEN. |
| 2. | Control circuit fuses OPEN. |
| 3. | Power switch (S1) inoperative. |
| 4. | Transformer (T2) inoperative (480V only). |
|
|
|
No heat, convection fan motor runs. | 1. | High limit thermostat OPEN. |
| 2. | Heating element malfunction. |
| 3. | Contactor malfunction. |
| 4. | Temperature control malfunction. |
|
|
|
No power to temperature control. | 1. | Power switch (S1) in “Cool Down”. |
| 2. | Door or door switch open. |
|
|
|
Door does not seal or shut properly | 1. | Doors out of adjustment. |
| 2. | Door chain out of adjustment or broken |
|
| (simultaneous doors). |
| 3. | Door catch roller out of adjustment or broken |
|
| (independent doors). |
| 4. | Door seals damaged. |
|
|
|
COMPUTER CONTROL MODELS ONLY
SYMPTOM |
| POSSIBLE CAUSES |
|
|
|
Oven does not heat. | 1. | High limit switch open. |
| 2. | Temperature probe malfunction. |
| 3. | Computer control malfunction. |
|
|
|
High limit thermostat shutting OFF heat. | 1. | Temperature probe malfunction. |
| 2. | Computer control malfunction. |
|
|
|
Oven not hot enough. | 1. | Temperature probe malfunction. |
| 2. | Computer control range high (rH1) setting to low. See |
|
| "SETUP MODE" under "COMPUTER CONTROL)". |
| 3. | Computer control malfunction. |
|
|
|
Blower motor doesn’t run with power | 1. | Line voltage incorrect. |
switch in “ON” or "COOL DOWN” position. | 2. | Power switch (S1) malfunction. |
| 3. | Fan speed switch (S3) malfunction. |
| 4. | Solid sate relay (SSR) malfunction. See "SOLID STATE |
|
| RELAY TEST" under "COMPUTER CONTROL". |
| 5. | Interconnecting wiring malfunction. |
| 6. | Motor inoperative. |
| 7. | Computer control malfunction. See "COMPUTER |
|
| CONTROL OPERATIONAL TEST". |
|
|
|
Page 57 of 60 |
| F25105 (December 2001) |
|
