20 Most Recent Laing Thermotech Autocirc Undersink Instant Hot Water Circulating System - Page 2 Questions & Answers


Recirculation pump goes on even

Open following link for Re-circulation information and resources:

On a new Autocirc, you can choose between 'Timed' operation or 'Thermostatic' operation using the slide switch located below timer dial.
For Thermostat operation, slide switch to ON.
For Timed operation slide switch to Timer.

This solution assumes system is functional, and the check valve and internal wiring are working. Autocirc is a quality product.

Add a comment with outcome so others with same problem will benefit.

Absolutely feel obligated to upvote the free help.
Or take advantage of fixya paid help.
For a price, expert works with you while you work on autocirc or any do-it-yourself project.
Fixya is always less expensive than a service call.
5/4/2011 10:27:12 AM • Laing Thermotech... • Answered on May 04, 2011

I have installed a new

Double check your slide switch.
For timer: set switch to TIMER
For thermostat: set switch to ON
If slide switch does not operate, then Autocirc may be defective

Laing (800) 554-6853

1) Household AC wiring will not affect the timer.
You can check your outlet using cheap circuit analyzer from home center.
The clock rotates one direction and the pins push small lever down which turns motor on-off.
When the OFF pins pass, the small lever snaps back and the motor turns ON.

I cannot immediately find operation manual for the E-1 model.
Typical ACT303 auto circ manual says following:

2) If timer controlled operation is desired, set timer and move slide switch to TIMER:
Manual says: tabs/pins are outward for ON times.
Another sentence says UPWARD, so I don't know which way the pins are set for sure.
So if you want timer ON for 2 hours, you would set 4 consecutive pins outward or upward.
ON for 6 hours, set 12 consecutive pins outward or upward.
If the timer turns ON in reverse of instructions, then set the pins that way.
Autocirc does not make the timer, they buy timer modules from clock-makers like Grasslin, Intermatic, etc.

3) To operate Autocir thermostatically without the timer, slide switch to ON position.
The clock dial will continue rotating
4/14/2011 7:29:57 AM • Laing Thermotech... • Answered on Apr 14, 2011

I have a Lang Autocirc with timer for 11 years.

Autocirc can be uninstalled and the pipe cleaned out with CLR (calcium lime and rust), otherwise there are no repair parts.
Once the motor begins to slow, it overheats and burns out.
11 years is a good run, so you must have good water or are careful about your water softener.

Using the timer and running Autocirc 1 hour a day costs between $11 and $17 per year to operate.
2 hours a day is $22-34 per year.
This includes pump operation and additional time that water heater operates.

Add a comment for more free help.
Also take advantage of fixya phone service.
For a price, expert speaks with you over phone while you work on circulation system or any do-it-yourself project.
Fixya is always less expensive than a service call.
1/18/2011 11:29:02 PM • Laing Thermotech... • Answered on Jan 18, 2011

I have a ACT-303 that


My thought is kinda crazy but it is the only thing that makes any sense...
I think that the pump may be running backwards....it happens sometimes that a motor can get a power surge or just plain decide to run the wrong way....this would keep you from getting the hot water and make it take longer then before as it is fighting the natural water flow and pressure...

There would be no fix to that... but I think that Laing has a 1 year warranty on their products...
I would check with the supplier that you purchased it from to see about a warranty replacement...

10/26/2010 1:24:58 AM • Laing Thermotech... • Answered on Oct 26, 2010

Punp ACT 303-BTW was working fine. Got some water

if you had a "pop" and lightning from the timer....
the water got into the electronics.
its time to replace.
getting hot.... was the cartridge either spinning dry, or spinning but not able to move water, did you have a valve off somewhere?
you might call laing or one of their distributors and see if its under warrantee.
where are you located, I can probably help you find a distributor.
8/23/2010 4:56:40 AM • Laing Thermotech... • Answered on Aug 23, 2010

Pump stopped working

replace the cartridge
8/15/2010 6:21:14 AM • Laing Thermotech... • Answered on Aug 15, 2010

Can this unit be used with a tankless hot water

Isn't the undersink unit hooked to the cold water pipe? If this is the case, the undersink unit is not affected by the tankless unit!
3/1/2010 7:56:32 PM • Laing Thermotech... • Answered on Mar 01, 2010

Clock on my laing thermotech e1 series stopped working, it's 5 months old...

Under warranty still?
10/17/2018 9:28:11 PM • Laing Thermotech... • Answered on Oct 17, 2018

We have a Spa n a box and we need to replace the heater it is a Laing Infinity Electrical Heater Model # SHH-1200-NHW and we can't seem to find a replacement for it anywhere, I really hope someone

Hi we are the Spa-N-A-Box UK Importer we have these heaters in stock contact us on ether 01934412320 or email us on [email protected]
4/28/2012 8:46:05 PM • Laing Thermotech... • Answered on Apr 28, 2012

Richmond water heater 6g40-36f1 lights then goes

Check the thermocouple and the control box.
3/18/2023 6:55:07 AM • Water Heaters • Answered on Mar 18, 2023

Want to see a manual for model 6G40-36F1

I can get the pilot lit but when I turn the water heater on it blows out everything it is a Richmond water heater serial number 6G 40-36f 1
3/4/2023 4:17:19 PM • Water Heaters • Answered on Mar 04, 2023

Paloma tankless displays error code C7 38. already removed remote and tried it still shuts off after a couple of minutes. any help?

The issue of the Paloma tankless water heater displaying error code C7 38 may be caused by several factors, including a problem with the thermistor or temperature sensor, an issue with the gas valve or gas pressure, or a malfunction with the control unit or circuit board. To troubleshoot, try checking the thermistor and temperature sensor, and verifying the proper functioning of the gas valve and gas pressure. If the problem persists, consider seeking professional repair or service.
1/29/2023 11:20:20 AM • Water Heaters • Answered on Jan 29, 2023

Honeywell WV8840B1109 temp control valve on water

You can reset the code by turning Gage all the way up highest setting count to ten turn it to hot could to ten then turn to pilot count to ten and then turn it to desired temp burner should come on. Saves lots of money and time
1/28/2023 9:18:38 PM • Water Heaters • Answered on Jan 28, 2023

Is the power button on my xtreme electric heater supposed to keep blinking.

The circuit is about to overload and the break could turn off due from too much electricity being used.The circuit is overloading or there is a problem with the panel needs to be replaced or the wires for your heater could be frayed or have tears in them and need to be replaced.
12/18/2022 8:08:56 AM • Water Heaters • Answered on Dec 18, 2022

Need a manual for drayton tempus 3 heating control

I've ended up with a Drayton Tempus 3 when I bought my house, and I think this is how it works. It allows you to set 2 Timers (I'll call them timer 1 and timer 2) so that you can control Hot Water or Heating On/Off times twice a day. The unit has 6 buttons - 2 for Adjustment, 2 for Hot Water and 2 for Heating. The 2 Adjustment buttons allow you adjust the Clock Time, or allow you to adjust Timer 1 and/or Timer 2. NOTE: Timer 1 is the time refered to on the Heating / Hot Water Select buttons if you press "Once". If you select "Twice" on these the both Timer 1 and Timer 2 are taken into account. For example if you want Hot Water to come on Once between 8pm -10pm, but you want Heating to come on Twice between 6am - 7am, and 8pm -10pm, you have to do the following: Set Timer 1 to 8pm - 10pm, and set Timer 2 to 6am -7pm. Then select Once for Hot Water, and select Twice for Heating. Hope this helps.
12/13/2022 9:55:31 AM • Water Heaters • Answered on Dec 13, 2022

Electric Water Heater blows fuse, but only every few years

Your residential water heater is not 9000 watts. Or it would blow the fuse every day and melt the wire. Instead, you have dual-element non-simultaneous 4500 watt water heater.http://waterhatertimer.org/How-it-works.htmlhttp://waterheatertimer.org/Figure-Volts-Amps-Watts-for-water-heater.htmlLook at label for 'total connected watts'http://waterheatertimer.org/images/Whirlpool-energy-smart-watt-rating-IMG_2600.jpg25 amp breaker or fuse and 10 gauge wire is minimum acceptable for 4500 watt water heater.http://waterheatertimer.org/Color-code-wire.htmlTroubleshoot blowing breaker or fuse:http://waterheatertimer.org/How-to-troubleshoot-electric-problems-with-water-heater.html#trip-breakerWhy does it blow fuse once each year?? I don't know.Fuses and breakers trip when overheating occurs on wire.Each fuse or breaker is rated for heat, and over time, it will get hot and then cool and then get hot again ... this action weakens fuse or breaker.To solve problem: install 3500 watt elements (and clean sediment out of tank). Wire will run cooler, and fuse will last longer. Whole fuse box will demand less power, and run cooler, and will last longer as a result. So there is less stress on electric service panel.http://waterheatertimer.org/How-to-replace-water-heater-element.html3500 watt element will heat water to same temperature, but takes longer. For example: 4500 watt heats 21 gallons per hour, while 3500 watt heats 17 gallons per hour. If you need further help, I’m available over the phone at https://www.6ya.com/expert/gene_9f0ef4df2f9897e7
11/25/2022 9:28:16 AM • Water Heaters • Answered on Nov 25, 2022

Mainstay 1500 watt model FP404RN heater won't start

11/21/2022 12:57:15 PM • Water Heaters • Answered on Nov 21, 2022

Pipe repair and not only in Toronto

Hi. Very cool requirement you actually have. There is nothing that the experts at this plumbing site in Canada can't do . They have been providing friendly service to commercial customers in Canada for over 20 years. I hope you find my recommendation helpful.
11/20/2022 5:06:29 AM • Water Heaters • Answered on Nov 20, 2022
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