Honeywell MiniZone EMM-3 Product Data page 10

EMM-3 ELECTRONIC MINIZONE™ PANEL
START
IS THERE
24 VAC AT THE
TRANSFORMER R AND C
ON THE EMM
PANEL?
YES
DO
YOU HAVE
24 VAC ON ALL OF
THE ZONES AT
R-M1 OR R-C
?
YES
IS THE
THERMOSTAT CALLING
FOR HEAT?
YES
YES
CHECK
FOR 24 VAC AT
W-M1 OR W-C ON
THE EMM PANEL. (YOU
SHOULD HAVE
24 VAC.)
YES
IS THERE
CONTINUITY AT
R -W ON THE EQUIPMENT
H
CONTACTS OF THE
EMM PANEL?
YES
Fig. 8. Thermostat is calling for heating but the system light is not turning red to show a heat call.
68-3041-2
CHECK THE TRANSFORMER
NO
FOR 24 VAC.
THE
THERMAL FUSE
HAS TRIPPED. REMOVE THE
R OR C (TRANSFORMER POWER)
WIRE FROM THE PANEL FOR 15 SECONDS
NO
AND ALLOW THE FUSE TO RESET. TAKE THE
THERMOSTAT AND DAMPER WIRES OFF FROM
EACH ZONE BEFORE YOU RE-ATTACH
THE R OR C WIRE. IS THERE
VOLTAGE AT R-M1 OR
R-CON ALL OF THE
ZONES?
NO
MAKE SURE THERMOSTAT IS CALLING FOR HEAT.
DID THE EMM PANEL HAVE ANY CONDENSATION ON IT?
WAS IT STORED IN A COLD PLACE BEFORE BEING
INSTALLED? IF SO, THIS COULD CAUSE THE PANEL TO
MALFUNCTION. LET THE PANEL ADAPT TO THE NEW
CONDITIONS BEFORE POWERUP.
NO
NO
24 VAC AT W-C ON THE
NO
DO YOU
NO
HAVE A DATS
HOOKED TO THE
PANEL?
THE HEATING EQUIPMENT SHOULD BE ON.
SEEMS LIKE THE PANEL IS WORKING BUT THE SYSTEM
LIGHT IS NOT. REPLACE PANEL.
THE PANEL MAY HAVE BEEN DAMAGED.
TAKE THE R OR C WIRE OFF AGAIN FOR 10
MINUTES. AFTER 10 MINUTES, RE-ATTACH
THE R OR C WIRE AND PRESS THE BOOT
BUTTON. CHECK VOLTAGE AT R-M1 OR R-C
ON ALL THE ZONES. IF NO VOLTAGE AT R-M1
OR R-C, REPLACE THE EMM PANEL.
NO
YES
NO
IS THERE JUMPER THE R WIRE TO THE W WIRE ON THE
THERMOSTAT. IF THE HEAT LIGHT COMES ON, YOU
THERMOSTAT? HAVE A BAD THERMOSTAT. REPLACE THERMOSTAT.
YES
IF YOU JUMPER R-W ON THE THERMOSTAT AND
THE HEAT LIGHT DOES NOT COME ON, YOU MAY
HAVE A BAD WIRE. TRY ANOTHER SET OF WIRES
OR CHECK CONTINUITY.
REMOVE ALL WIRES FROM THE PANEL EXCEPT
R AND C (POWER FROM THE TRANSFORMER).
JUMPER R-W ON ONE OF THE ZONES. IF THE
SYSTEM LIGHT DOES NOT TURN RED, REPLACE
THE PANEL.
YES
REMOVE THE DATS WIRES FROM THE PANEL.
RETURN TO "IS THE THERMOSTAT CALLING FOR
HEAT" PART OF THE FLOWCHART AND BEGIN
TROUBLESHOOTING FROM THAT POINT.
10
RE-ATTACH EACH ZONE THERMOSTAT WIRE.
ATTACH EACH ZONE SEPARATELY, CHECKING
AFTER EACH ZONE IS ATTACHED IF THE
THERMAL FUSE HAS TRIPPED. AFTER
ATTACHING THE THERMOSTAT WIRES, ATTACH
EACH MOTOR ZONE WIRES, AGAIN CHECKING
THE THERMAL FUSE TO SEE IF IT TRIPS. THIS
STEP-BY-STEP PROCESS SHOULD HELP YOU
IDENTIFY WHAT IS TRIPPING THE THERMAL
FUSE ON THE PANEL.
IT COULD BE A BAD WIRE. IF YOU HAVE
VOLTAGE ON THE PANEL AT W-C BUT NOT AT
THE THERMOSTAT, THEN IT IS A WIRE. CHECK
FOR VOLTAGE AT R-Y, G ON THE THERMOSTAT.
IF THERE IS VOLTAGE, IT IS A BAD W WIRE. IF
NO VOLTAGE AT R-ANY OTHER TERMINAL ON
THE THERMOSTAT, IT IS A BAD R WIRE.
M13546A