Honeywell REDLINK ERM5220R User Manual

ERM5220R EQUIPMENT REMOTE MODULE
33-00205—01 26
Fig. 22.
M36134
WHEN THE COMPRESSOR LED AND O/B LED ARE BOTH SOLID GREEN WE WOULD EXPECT VOLTAGE FROM
O/B TO C. REPLACE ERM. IF YOU HAVE MORE THAN ONE FAILURE OF THIS TYPE, PLEASE CALL THE SUPPORT
LINE FROM THE SITE FOR FURTHER TROUBLESHOOTING AT 800-468-1502 BETWEEN 8-4:30 CST M-F.
COOLING RUNS WITH A CALL FOR HEAT (HEAPUMP).
IS THE COMPRESSOR LED LIT ON THE ERM5220R?
YES
NO
IS THE LED ABOVE THE Y TERMINAL
LIT GREEN ON THE ERM5220R?
YES
NO
YES
NO
IS THE LED ABOVE THE O/B TERMINAL
LIT GREEN ON THE ERM5220R?
IS THE BOILER LED LIT ON THE ERM5220R?
YES
NO
ADD THE R TO J JUMPER ON ERM FOR HEATPUMP
APPLICATIONS. SEE WIRING DIAGRAM (FIGURE 11).
ERM SHOULD NOT BE RUNNING HEAT OR COOLING AT THIS TIME.
PLEASE CALL THE SUPPORT LINE FROM THE SITE FOR FURTHER
TROUBLESHOOTING AT 800-468-1502 BETWEEN 8-4:30 CST M-F.
NEITHER HEAT NOR COOL SHOULD BE RUNNING. VERIFY CONNECTIONS TO R AND
C AND VERIFY 24 VAC TO THOSE TERMINALS. SEE WIRING DIAGRAM (FIGURE 11).
THIS INDICATES THAT THE
THERMOSTAT IS CONFIGURED TO
ENERGIZE THE CHANGEOVER IN
HEAT MODE. IS THIS CORRECT?
THIS INDICATES THAT THE THERMOSTAT IS CONFIGURED TO
ENERGIZE THE CHANGEOVER IN COOL MODE. IS THIS CORRECT?
YES
NO
YES
NO
RECONFIGURE THE
THERMOSTAT TO ENERGIZE
CHANGEOVER IN COOL MODE.
0 VOLTS
24 VOLTS
MEASURE VOLTAGE ACROSS THE
O/B AND C TERMINALS ON ERM.
MEASURE VOLTAGE
FROM R TO C ON
ERM. (METER TEST)
0 VOLTS24 VOLTS
0 VOLTS INDICATES NO VOLTAGE
TO POWER ERM. IT IS VERY ODD
THAT THERE ARE LEDS LIT ON ERM
IF THERE IS NO VOLTAGE. DOUBLE-
CHECK VOLTAGE METER.
RECONFIGURE THE THERMOSTAT TO
ENERGIZE CHANGEOVER IN HEAT MODE.
MEASURE VOLTAGE ACROSS THE O/B AND C TERMINALS ON ERM.
0 VOLTS
24 VOLTS
24 VOLTS INDICATES ERM IS NOT SENDING VOLTAGE TO THE CHANGE-
OVER VALVE WIRE. THE HEATPUMP SHOULD RUN IN HEAT WHEN THE
CHANGEOVER IS NOT ENERGIZED. ISSUE IS NOT WITH ERM.
24 VOLTS INDICATES ERM IS CORRECTLY SENDING VOLTAGE
TO THE CHANGEOVER VALVE WIRE. DOUBLE-CHECK WIRE
CONNECTIONS. SEE
FIGURE 11 .
WHEN THE O/B LED IS UNLIT WE WOULD NOT EXPECT VOLTAGE FROM O/B TO C.
DISCONNECT WIRE FROM O/B AND RE-TAKE READING ACROSS O/B TO C
TERMINALS. IF YOU NO LONGER HAVE VOLTAGE, THE O/B WIRE IS SHORTED. IF
YOU STILL HAVE VOLTAGE FROM O/B TO C, REPLACE ERM. IF YOU HAVE MORE
THAN ONE FAILURE OF THIS TYPE, PLEASE CALL THE SUPPORT LINE FROM THE
SITE FOR FURTHER TROUBLESHOOTING AT 800-468-1502 BETWEEN 8-4:30 CST M-F.

Honeywell REDLINK ERM5220R Specifications

General

Brand	Honeywell
Model	REDLINK ERM5220R
Category	Control Unit
Language	English