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How to wire Intermatic T12404R
Troubleshoot Intermatic T12404R
T12404 control center
Two timers for pool filter and clearner
T10101R comes with two 120 volt T101 timers
T10401 comes with two 240 volt T104 timers

T10000R series/ without breaker slots/
One knockout on the right side for mounting switching device or GFCI.
Two combination décor/toggle switch knockouts on the deadfront.

Buy
T104 replacement mechanism
T104R201M replacement mechanism with fireman switch
T12404R with T104201 and T104/   208-240V with fireman switch
Pentair pool
Hayward pool
Intermatic parts sheets
Resources:
Control centers and parts
Digital control centers and parts
Freeze control centers and parts
T10404 wiringT12404R with two T104 timers for filter and cleaner
Supply voltage is 240 volts that connects to Terminals 1 and 2 on Filter timer.
Both timers have a clock motor that rotates the yellow dial once per day. The dial can have up to 12 sets of trippers for 12 ON-Off periods each day. Both clock motors are connected to terminals 1 and 2 on the Filter timer.

The terminals on Cleaner timer receive no voltage unless the Filter timer is ON. This assures that pool cleaner can only run when the filter pump is ON.

 Filter pump must be ON so debris from the pool can be run through the sand filter.
T01404 wiringEach timer on different breaker/ 2 circuit breakers
Illustation shows a method for running the filter pump and cleaner on separate circuit breakers.
This came from an email question from a fellow who was experiencing overload on 1 circuit breaker, and wanted to install second breaker to run the cleaner.
The contactor turns ON when filter timer is ON. The contactor closes circuit so cleaner timer receives power. Whe cleaner turns ON, it is powered from the second circuit breaker.

Buy: 40 amp 240Volt contactor

Convert control center timers to either 120 Volt or 240 volt by changing clock motor
Buy:
240 volt clock motor for T12402R
120 volt clock motor for T10101R


Resources:
Contactor wiring
Match wire and breaker size
Fireman switch wiringFireman switch is not wired with voltage at timer
Do NOT connect any voltage to wires on fireman switch.
The fireman switch is connected to two wires or terminals on pool heater.

The terminals at heater carry 24 volt that run to the fireman switch located on timer.

As the timer dial rotates, the off tripper comes into contact with the fireman switch. This activates the switch, causing the heater to turn off approximately 20 minutes before the filter pump turns off.

This prevents heater from running when the pump is off.
But the heater does not require a timer with fireman switch. The heater has it's own control system and thermostat that operate completely independent of the Intermatic timer. The heater has a pressure switch that turns off automatically when water pressure in the water line drops. So when pump turns off, the water slows down, and heater turns off. 

In addition to the pressure switch, the heater also has high limit switch that automatically turns off heater if water inside pipe is too hot. The limit switch gives heater a back up system if the pressure switch or thermostat fail.

However in some cases, you want the timer to turn off the heater before the pump turns off, so hot water is not left inside the pipe.
Purpose of fireman switch is to turn off heater 15-20 minutes before the pump.
That ensures maximum utilization of hot water, and ensures heater is not ON unless timer is ON. 

The fireman switch provides additional layer of fail safe for the heater. And then both pump and heater work together to maximum efficiency and protection.

Resource:
T10101R manual
Match wire and breaker size
T10101R wiringT10101R wiring
This control center has same function as T12402R except for 120 volt installations.

240 volt motors run more efficiently than 120V.
Most motors can be wired for either voltage. Look at rating plate on motor to select correct control center, wire size and breaker.

Buy:
T10101R control center with 2x T101  /120V

Convert control center timers to either 120 Volt or 240 volt by changing clock motor
Buy:
240 volt clock motor for T12402R
120 volt clock motor for T10101R
Resource:
T10101R manual
Match wire and breaker size


Add a freeze thermostat to T12404R


When temperatures drop below set point, the freeze override will send power to the Filter pump.
Power is also on the cleaner timer.
Intermatic freeze control PA102
Buy
PA102 mechanical thermostat and SPDT relay
Freeze control
Inline freeze switch

Resources:
How to wire PF1202T and PF1222TB
Intermatic freeze controls and manuals
WH40 clock motorTroubleshoot T12404R
-Flip circuit breaker fully off and then back on.
-Check that both clock motors are connected to terminals 1 and 2 on the Filter timer.
-Observe if both clock dials are rotating 1 revolution per day. If dials are not rotating, then clock motor is bad, unit is not getting voltage, or is getting incorrect voltage.
-Convert timer to either 120 Volt or 240 volt by changing clock motor
Buy:
240 volt clock motor for T12402R
120 volt clock motor for T10101R

-Check if each clock dial has ON and OFF trippers fastened to yellow dial.
-Move both override levers to ON position. If Filter pump is OFF and Cleaner pump is OFF, then move both override levers to ON position. If Filter pump works and Cleaner pump works, then voltage is correct and wiring is correct.
-If all the above steps function correctly, observe if the trippers push the override lever back and forth between ON position and OFF position. If the dial rotates tripper past the override lever, and override lever does not change position, then most likely problem is worn trippers need to be replaced. 
Intermatic 156T1978A tripperBuy: trippers
156T1978A set 2
156T1978A trippers
PA115 - 25 sets

-If the trippers are sliding past the override lever, and new trippers do not solve problem, then replace timer module.
Buy:
T101M 120 volt mechanism only
T104M 240 volt mechaism

- Undersized wire and breaker can cause malfunctions.
- Check that motor load is working correctly. Look at rating plate on motor for voltage and amperage requirements. 
- Convert control center timers to either 120 Volt or 240 volt by changing clock motor
Buy:
240 volt clock motor for T12402R
120 volt clock motor for T10101R

-If the above steps check OK, then check terminal connections and wires. Max 2 wires under a terminals. Do not use stranded wire. Clean corroded wires with sandpaper, or use white vinegar to help dissolve build-up on terminals. Tighten screws very tight against copper wire. Use only copper wire. 

T104M201
T104M201 mechanism with fireman switch
Buy:
T104M201 mechanism with fireman
T101M
Larger image

T104M Mechanism only
Buy:
T104M at Amazon


clean and straighten wire ends
Insdulation under screw plate
Larger image
Both wires MUST be same gauge
Straighten each wire 
Tighten screw very tight against copper wire



Larger image

Connect stranded and solid with wire connector and run jumper to screw plate. 
Or add solder to stranded wire to make solid.
See example image
10-3-wire
10-3-wire  12 Ga
10 gauge or 12 gauge?
10 gauge is larger/ for 30 amp breaker. 12 gauge is smaller/ for 20 amp breaker
10 gauge wire can have black-white or black-red
12 gauge will have black and white wires

Buy short pieces 10 and 12 gauge wire at local box store
Compare with your wire.
Resource:
Match color code and amp rating for wire
circuit breaker resources Circuit breaker resources
Water heater is tripping breaker
How to replace circuit breaker
How to wire gfci
Can AC breaker be used for DC breaker
How to reset circuit breaker
Not enough space for circuit breakers/ use tandem
Circuit breakers
How to install subpanel
Why you need ground wire
See inside breaker box
How to wire safety switch
How to wire whole house surge protector
Figure volts amps and watts
Figure correct wire and breaker
Types of surge protection
single-pole breaker
120 Volt
Push down breaker
Plug-in breakers
Fit residential panels
Buy single-pole:
Siemens 15-60 amp
Single-pole tandem breaker
Resource:
Replace circuit breaker
Not enough space inside breaker box
double-pole breaker
240 Volt
Push down breaker
Plug-in breakers
Fits residential panels
Buy double-pole:
Siemens 15-125 amp
Resource:
See inside main breaker box


Buy indoor/ outdoor subpanel:
120-240 Volt
Subpanels at Amazon
Use up to rated amps

Resource:
How to wire subpanel

Buy:
10-2 gauge/ 30 amp
10-3/ 30 amp

NMB is house wiring
UF is underground
Resource:
Match breaker and wire size

Buy:
12-2 gauge/ 20 amp
12-3/ 20 amp

NMB is house wiring
UF is underground

box timers Resource:
Compare box timers
DPDT timers
Intermatic
Control water heater w/ Z-wave
Intermatic control centers Resource:
Intermatic control centers: and parts
Digital control centers and parts
Tork control centers and parts
Subpanels
All control centers and parts
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