Wiring Guide

11 of 12 © 2008 W 335 - 12/08
Testing the Input Power Terminals 28, 29
Testing the Zone Group Pump A Output Terminals 30, 31
1. Remove the front cover from the control.
2. Use an electrical test meter to measure the (ac) voltage
between the Zone Group Pump A terminals (30- 31).
•
• When the Zone Group Pump A light is off, the reading
should be 0 V (ac) and the pump should be off.
•
• When the Zone Group Pump A light is on, the reading
should be 115 V (ac) + / – 10% and the pump should be
running.
Note: If the pump does not operate properly, refer to
any troubleshooting information supplied by the pump
manufacturer.
Testing the Zone Valve Outputs Terminals 32-43
1. Remove the front cover from the control.
2. Use an electrical test meter to measure (ac) voltage
between the Input Power L and N terminals (28 and
29). The reading should be 115 V (ac) + / – 10% and
the ‘Power’ LED should be lit green.
3. If power is not present and the light is off:
•
• Check the circuit that supplies power to the Zone
Manager.
4. If power is present but the ‘Power’ LED is lit amber:
•
• Check the field replaceable transformer fuse on the Zone
Manager.
•
• If the fuse is blown, determine the cause of the failure
before replacing the fuse.
1. Remove the front cover from the control.
2. Use an electrical test meter to measure the (ac) voltage
between the C and the Vlv terminals for each zone valve
output.
•
• When the Zone light is off, the reading should be 0 V
(ac) and the valve should be closed.
•
• When the Zone light is on, the reading should be 24 V
(ac) + / – 10% and the valve should be open.
3. If power is not present:
•
• Check the power supply to the Zone Manager and the
field replaceable fuse for the transformer on the Zone
Manager.
•
• If the power light is amber instead of green the transformer
fuse is blown. Determine the cause of the failure before
replacing the fuse.
Note: If the zone valve does not operate properly, refer
to any troubleshooting information supplied by the zone
valve manufacturer.