Submittal Sheet

ManualsBrandsZoneFirst ManualsDamper ControlsMini-Masterzone 2 or 3 Zone Single Stage Heat/Cool Control Panel (Plug-n-Play)

Zone(s) Not Calling

Each zone has a Green LED next to the zone relay when it is calling.

The LED being lit shows that the call is being recognized by the MMP3.

If a zone is supposed to be calling and the Zone LED is not on, check

for 24VAC across the thermostat terminal C and the Y, if a Cool call, W

if a Heat Call, or G if a Fan call. If there is no voltage here at the panel

the panel is not getting the signal from the thermostat. The problem is

mis-wiring, a broken wire or a problem in the thermostat. To check the

zone on the panel, place jumper from R to Y to simulate a Cool call, R

to W to simulate a Heat call, or R to G to simulate a Fan call. By

jumpering these terminals the zone call LED will activate.

Zone(s) Will Not Shut Off

If a zone will not stop calling, the Zone LED should still be on.

Depending on the call disconnect the Y, W or G wire from the zone

terminal strip on the panel. The call from that zone will drop out when

the thermostat wire is removed. Check the thermostat wiring for a mis-

wiring or short that keeps the zone calling.

If the thermostat wire is disconnected from the proper terminal on the

zone and the zone LED remains lit, re-boot the panel to see if the call

drops. If the call still stays on, turn power off to the panel for 10

seconds and then turn back on. Once powered is restored and the

thermostat is disconected the call should drop from the zone. If not

replace panel.

Damper Motor Checkout Procedure

In order to determine the operation of the damper motors, the panel

motor plug can be checked to determine if power is being supplied

from the panel. If there is power at the motor plug, the problem may

be a broken wire or poor connection in the cord or the motor itself.

To check the power to the motor from the damper plug on the panel,

switch your meter to DC Volts. Note the wires on the plug and check

across either Positive and Neagtive wires. Note that each plug has two

positive leads and two negative leads. Both positive and both negative

leads are wired together. The meter will read either Plus(+) or Minus (-)

12VDC depending if the damper is to be Open or Closed respectively.

DAMPER CLOSED

-12VDC

NOT USED

POSITIVE (+)

NEGATIVE (-)

MOTOR PLUG

VDC

-12VDC

NOT USED

POSITIVE (+)

NEGATIVE (-)

MOTOR PLUG

-12VDC-12VDC

NOT USED

POSITIVE (+)

NEGATIVE (-)

MOTOR PLUG

VDC

DAMPER OPEN

+12VDC

NOT USED

POSITIVE (+)

NEGATIVE (-)

MOTOR PLUG

VDC

+12VDC

NOT USED

POSITIVE (+)

NEGATIVE (-)

MOTOR PLUG

+12VDC+12VDC

NOT USED

POSITIVE (+)

NEGATIVE (-)

MOTOR PLUG

VDC

When using multiple dampers on a single zone, please note to have no

more than 6 dampers on a single zone. Adding dampers beyond the

recommended number may cause all dampers to be slow to operate

and may not fully cycle between open and closed.

Form 2263-0710 MMP3 Installation and Operating Instructions