SMC Networks HRS012-A-10 Series - Troubleshooting of Errors Without Alarm Generation; The Circulating Fluid Temperature Does Not Go down; The Circulating Fluid Temperature Does Not Go up; The Operation Panel Displays Nothing

HRX-MM-N007
Chapter 3 Alarm Indication and Troubleshooting
3.3 Troubleshooting HRS Series
3-114
3.3.5 Troubleshooting of errors without alarm generation
The circulating fluid temperature does not go down
See section "AL02: High
circulating fluid discharge temp.".
The circulating fluid temperature
does not go down.
The circulating fluid temperature does not go up
See section "AL04: Circulating
fluid discharge temp. drop".
The circulating fluid temperature
does not go up.
The operation panel displays nothing
2.
Check the DC power
supply.
1.
Check the connection.
Connect the connectors.
Error
Normal
The operation panel displays
nothing even the power supply
switch is turned ON.
Is there power supply?
Supply the correct power.
N
Y
Error
Normal
Replace the DC power supply.
See section "4.5.15
Replacement of DC power
supply".
Replace the display board.
See section "4.5.18
Replacement of display
board".