| Symptom |
Cause |
Solutions |
| Power-On Light does not illuminate |
Wall outlet or plug |
Verify power at outlet. Make sure power cord is plugged in at the wall and at the machine. |
| |
Power Switch |
Turn Power Switch ON. Replace if necessary |
|
Circuit Breaker |
Reset breaker. Check for short circuit (see Electrical Troubleshooting Guide). If no short is found, replace Circuit Breaker |
| |
Power Lamp |
Replace Power Light. |
|
Open Circuit |
Check for loose or disconnected wires. Replace Wire Harness, if necessary |
| Heat Lamp OFF in STE cycle |
Timer |
Check that Timer is turned ON. Timer must be advanced past 10 minutes to activate. |
|
Heat Lamp |
If unit has heat and pressure, check and/or replace Heat Lamp. If unit has no heat, check for open circuit (see Electrical Troubleshooting Guide). |
|
Micro-Switch 1 (MSW1) is defective or it is stuck in the down position. |
Check MSW1. Adjust or replace as necessary |
|
Control Thermostat |
Set Control Thermostat to 212°F or higher. Adjust or replace Control Thermostat as necessary. |
| Heat lamp is ON; No heat or pressure |
Heaters |
Measure Heater for proper resistance (see Electrical Troubleshooting Guide). Check for broken/disconnected wiring. Replace if necessary |
| Heat lamp is ON in STE cycle, but with low heat and slow pressure build |
Steam Leak |
Check for audible/visual steam leak at Door Gasket, Door Bellows, Safety Valve, Air Jet Valve,
and Condensation Coil. If there are air bubbles in reservoir, check Multi-Purpose Valve.
Repair or replace faulty part(s) as necessary |
|
Heaters |
Measure Heaters for proper resistance, (see C Table Electrical Troubleshooting Guide). Check for broken or disconnected wiring. |
|
Control Thermostat |
Set Control Thermostat to 212°F or higher. Adjust or replace Control Thermostat as necessary. |
|
Excess water in Chamber |
Check water level. Check level of unit per Installation Procedure, see Figure 1, of Tuttnauer Maintenance Guide. |
|
Pressure Gauge |
Check and/or replace Pressure Gauge |
| Safety Valve opens |
Control Thermostat |
Reset Control Thermostat to proper value or, if necessary, replace it |
|
Safety Valve |
If Safety Valve opens below rated cracking pressure, replace it. |
| Unit overheats, Heat Light stays ON |
Water level |
Check fill operation and water level, see Figure 1, of Tuttnauer Maintenance Guide |
|
Water or steam leak |
Check for audible/visual steam leak at Door Gasket, Door
Bellows, Safety Valve, Air Jet Valve, and Condensation Coil.
If there are air bubbles in reservoir, check Multi-Purpose Valve.
Repair or replace part(s) as necessary. |
| Unit overheats, Power and Heat Lights go out |
Low water level (Over Temp Safety Switch) |
Check for water or steam leak. Replace Over Temp Safety Switch if necessary |
| Heat lamp remains ON when Timer is at 0 or Timer will not advance |
Timer |
Timer must be advanced past 10 minutes to activate. Check Timer operation and replace if necessary. |
| Timer Bell does not sound |
Timer |
Timer must be advanced past 10 minutes to activate. Check Timer operation and replace if necessary. |
| Water enters Chamber after unit is exhausted and the door is closed |
Condensation Coil |
Water level is above open end or there is a hole in the Condensation
Coil creating a vacuum. Reduce water level to 1" below
Safety Valve and open end of Condensation Coil must be above
water level. Replace Condensation Coil if necessary. |
|
Multi-Purpose Valve (if not stuck open) |
Remove, disassemble, clean and rebuild, or replace Multi-Purpose Valve (see MULTI-PURPOSE VALVE, page 9). |
| The machine is leaking at the door |
Door Loose |
Make sure the door is tightened |
|
Door Gasket |
Replace The Door Gasket |
| When running a cycle, the exhaust stage takes a very long time. |
|
If you are running a "Liquids" program this is normal. |
|
Switch Setting |
Check the switch on the back of the machine.
Make sure that it is set
to "Exh. to Reservoir" if you are not using the drain connection |
