E4 means what in idec - RTO Idec Rte-p1ad24 24vac/dv Electronic Timer

Question edited for clarity and typos.

This is a unit I have never heard of. I am in Canada, so this link might work better for you than it does for me.

https://www.google.com/search?q=IDEC+AIR+CONDITIONING+UNIT+1.5HP.+Error+D2

The correct search query would be IDEC (if that is the maker) MODEL number Error codes

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"E4" means Error and from 1 to 5 means malfunction in water valve / sensor. E4 means defective water level sensor.

I have a model yf-008 110 v 3000w tankless water heater it shows e4 what dose that mean

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E6 error code comes for room sensor in this. It means there is any damage in sensor. Pls replace it

(E4) means a problem with your Temperature sensor
God bless you

E4 error indicate an abnormal water level which means too much inlet water (E5 also is refer at this fault).

I quote other comments/solution about this same error:
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I had the e4 error code and i took the outer panel off and inside behind the power button is a grey reservoir tank which measures the water that goes inside the dishwasher which actually got bunged up with **** and grease causing the floaty thing to get jammed and cause the e4 code to come on which means abnormal water level the top to the reservoir just unclips on both sides then just clean all the gooey stuff out and put it back together it worked for me.
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Good luck.

There will be more to it than just E4..........it will say E4-01, E4-10,11, OR 12.
If its e4-01...that means the machine is not warming up and may have a problem with the Fuser unit.
If its E4-10,11 or 12 it relates to a problem with a Fan motor.
Thats the best I can do given the information you have provided.

RTE-p1ad is 24-volt AC 8-pin on-delay timer.

Manual for RTE-P1 & RTE-P2
http://www.idec.com/language/english/catalog/U908/G_Timers_RTE.pdf


I have not wired the P1 timer.
Manual shows for ON-delay, 24VAC input power goes to terminals 2 and 7
Using multimeter set to read ohms, check continuity between pins 7 and 8 to see if these pins are connected internally, or if you need jumper.
Also check continuity between pins 1 and 2 for same.

When power is applied to 2 and 7, the ON delay countdown begins.
When countdown ends, the switches are activated.
Switches are represented by angled line that connects to terminals 1 and 8. When countdown ends, the switch moves left and and completes circuit to other wire.

Using multimeter set to 24VAC, you can check each of the pins by putting power to 2 and 7 and checking which pins have power after countdown ends.
The NC normally closed terminals are 1 and 4, and 5 and 8, so it appears that these terminals are ON all the time until countdown ends and 'contacts transfer power.' Test the pins to be certain.

There are contact numbers for product:
USA: (800) 262-IDEC or (408) 747-0550, Canada: (888) 317-IDEC

york hvac unit e4 error code Troubleshooting