TS-13: Central Heat Circulating Problems

Does the display show “Standby”?

Yes No

#B6

Does the display show Central heat (CH) or DHW?

CH DHW

#B11

The boiler default is DHW priority. Turn off DHW by reducing the DHW water temp setting on indirect aquastat. Did display change to CH?

Yes No

Back

#B18

Turn up thermostats Did CH show up on the display?

Yes No

Back

#B22

Turn off the boiler switch to shut boiler down. After 10 Seconds or more turn the switch back on. Did CH show up on the display?

Yes No

Back

#B28

Remove the thermostat wires and place a jumper between the Heating Tstat terminals on the boiler terminal strip. Did the display show Central Heat (CH)?

Yes No

Back

#C34

Press the status button. Is the “Supply temperature” near or higher than the “Setpoint” water temperture?

Yes No

Back

#F6

Jumper the heating thermostat terminals on the low voltage circuit board. Did the boiler display Central heat?

Yes No

Back

#F12

Bad wire between the boiler and the thermostat. Replace wire.

Done

Back

#F19

Did the boiler start?

Yes No

Back

#F24

Are the thermostats wired to a zone panel, zone valves or a single thermostat?

Single Thermostat Zone Valves Zone Circ Panel

Back

#F34

When thermostats are turned up do the zone valves open?

Yes No

Back

#F42

When the thermostat demands heat do the zone lights come on?

Yes No

Back

#F47

Remove thermostat and jumper the R to W terminals. Do the zone light(s) come on?

Yes No

Back

#F52

This is normal that the burner is not firing. The temp is satisfied to setpoint temperature

Done

Back

#L6

Remove thermostat and jumper the R to W terminals. Did the boiler start?

Yes No

Back

#K34

Does the boiler fire and run?

Yes No

Back

#K42

Repair or replace the zone panel.

Done

Back

#K47

Check settings on thermostat, change batteries or replace thermostat

Done Return to zone panel troubleshooting

Back

#O34

Jumper the zone valve end switch. Does the boiler fire?

Yes No

Back

#O42

Remove the wires from zone panel end switch that connects to the boiler and place them together or meter the end switch for continunity. Does the boiler fire and run?

Yes No

Back

#O47

Jumper the heating t-stat terminals on the boiler low voltage board. Does the boiler display change from standby to central heat?

Yes No

Back

#S34

Repair or replace zone valve

Main menu

Back

#S42

Do the corresponding circulator(s) start?

Yes No

Back

#S47

Defective wire, repair or replace

Main menu

Back

#V42

Check for 120Vac from the circulator terminals to the appropriate circ’s. Is 120Vac available at circ terminals?

Yes No

Back

#V47

Remove thermostat and jumper the R to W terminals. Did the zone valve open?

Yes No

Back

#Y42

Is there 120Vac avilable at the circulator?

Yes No

Back

#Y47

Is a System circulator wired to the boiler? Usually it would be if the system is zoned with Zone Valves and normally not if zoned with circulators unless there is only one heat zone.

Yes No

Back

#AD6

Done

Back

#AJ9

While the boiler is in demand for heat is there 120Vac on the System circulator “L” terminal on the line voltage circuit board?

Yes No

Back

#AP6

Check for 120V at the System circulator

Yes No

Back

#AP13

Replace circulator

Done

Back

#AP18

replace wire

Main menu

Back

#AP23

Call Tech Services

Back

#AR30

There is a fuse on the line voltage PC board. Check the fuse by removing the fuse and ohm the fuse. Is the fuse blown?

Yes No

Back

#AW6

Replace fuse. Did the fuse blow again?

Yes No

Back

#AW12

Completed

Done

Back

#AW18

Turn the boiler off. Disconnect the System and DHW circulator wires to the line voltage circuit board. Replace the fuse. Turn the boiler back on. Did the fuse blow again?

Yes No

Back

#AW22

Turn the power off to the boiler and repalce the DHW circulator wires on the board and turn the boiler back on. If the fuse does not blow turn the boiler back off and do the system circ wire. Turn power back on, which connection blew the fuse?

System Circ DHW Neither

Back

#AW29

TS Node Text

Done

Back

#BC3

Check for 120Vac on the Sage2 control terminal J4-6. Is there voltage?

Yes No

Back

#BD6

Replace the line voltage circuit board.