Chapter 7 Error Codes & Troubleshooting - Brainchild BTC-2500 User Manual

Chapter 7 Error Codes & Troubleshooting Chapter 7 Error Codes & Troubleshooting
This procedure requires access to the circuitry of a live power unit. Dangerous accidental contact with line voltage This procedure requires access to the circuitry of a live power unit. Dangerous accidental contact with line voltage
is possible. Only qualified personnel are allowable to perform these procedures. Potentially lethal voltages are is possible. Only qualified personnel are allowable to perform these procedures. Potentially lethal voltages are
present. present.
Troubleshooting Procedures : Troubleshooting Procedures :
(1) If an error message is displayed, refer to (1) If an error message is displayed, refer to
failure unit. failure unit.
(2) Check each point listed below. Experience has proven that many control problems are caused by a defective (2) Check each point listed below. Experience has proven that many control problems are caused by a defective
instrument. instrument.
Line wires are improperly connected Line wires are improperly connected
*
* No voltage between line terminals No voltage between line terminals
Incorrect voltage between line terminals Incorrect voltage between line terminals
*
Connections to terminals are open, missing or loose Connections to terminals are open, missing or loose
*
* Thermocouple is open at tip Thermocouple is open at tip
* Thermocouple lead is broken Thermocouple lead is broken
Shorted thermocouple leads Shorted thermocouple leads
*
Short across terminals Short across terminals
*
Open or shorted heater circuit Open or shorted heater circuit
*
Open coil in external contactor Open coil in external contactor
*
Burned out line fuses Burned out line fuses
*
* Burned out relay inside control Burned out relay inside control
* Defective solid-state relays Defective solid-state relays
Defective line switches Defective line switches
*
Burned out contactor Burned out contactor
*
* Defective circuit breakers Defective circuit breakers
(3) If the points listed on the above chart have been checked and the controller does not function properly, it is (3) If the points listed on the above chart have been checked and the controller does not function properly, it is
suggested that the instrument be returned to the factory for inspection. suggested that the instrument be returned to the factory for inspection.
Do not attempt to make repairs without qualified engineer and proper technical information . It may create Do not attempt to make repairs without qualified engineer and proper technical information . It may create
costly damage. Also , it is advisable to use adequate packing materials to prevent damage in transportation. costly damage. Also , it is advisable to use adequate packing materials to prevent damage in transportation.
(4) Dismantle the controller according to (4) Dismantle the controller according to
Refer to Refer to Table 7.2 Table 7.2
1
Press both sides of the latch located on rear Press both sides of the latch located on rear
terminal block.Hold tightly and remove the terminal terminal block.Hold tightly and remove the terminal
block from the housing. block from the housing.
2 Expand the rear edge of the housing by Expand the rear edge of the housing by
using a tool. Pull out the PCB from the housing. using a tool. Pull out the PCB from the housing.
1
2
A1
104
Table 7.1 Table 7.1
Figure 7.1 Figure 7.1
for some probable causes and actions. for some probable causes and actions.
C
to see what cause it is and apply a corrective action to the to see what cause it is and apply a corrective action to the
. .
UM25001C
Figure 7.1 Figure 7.1
Dismantling the Controller Dismantling the Controller