EK3 Frontier Boiler Manual
22
Seventh Edition- October 2015
DIAGNOSTICS with the DIGITAL MANAGER
Manager Lights
Temperature
Description DIAGNOSIS
(1)
Normal Operation
Thermostat calling
No Zone output lights
(2)
Normal Operation
No Thermostat Call
Zone Outputs On
Circulator On
(3)
Normal Operation
Hot Water Calling
Thermostat Calling
Only Output zone is hot water
(4)
Problem
No Lights on Manager
(5)
Problem
Burner Light On
Burner Not Running
(7)
Problem
Zone Output Light On
Zone Valve does not open
(8)
Normal Operation
Dim light on thermostat
calling.
Burner Restart: A two (2) minute delay is built into the control. (45 seconds for a Hot Water call).
Reset the Digital Manager by turning system switch off and back on again
.
Service Board Mode- With power off, remove the RED lead of the temperature sensor to run in this mode.
A Service Board for temporary operation without Manager is available. This is interchangeable with the
Classic and Digital Managers. Rebuilt Managers are available and require the return of a rebuildable Manager.
Check
Main
Power
Check Transformer for 24 volts
Check A1, A2 terminals on Manager for 24
volts
Check boiler temperature and high limit
aquastat. Set higher for test. Check for boiler
circulation failure.
Check burner for power in.
Check burner and/or cad cell relay. Reset if
necessary. If still no heat, jumper TT terminals
on burner relay to test burner.
Check for 24 volts between 24VAC common
and zone in question.
Check zone valve or circulator on zone calling
for operation.
A dull yellow light is common with a power-
stealing thermostat. It is not a call for heat.
Check option switch 10, hot water priority.
“ON” sets up to 25 minutes priority to hot water
zone, then other calling zones open.
Energy Recovery cycle will run until time or
return temperature is reached. (See option
switches 5 through 8.)
Preheat cycle – zones will open when boiler
return is above 140
o
F (150
o
F if option switch
1 is on).
Return temperature dropped during call.
Zones close until boiler is up to temperature.