Have a 97 Gulfstream with 2 Coleman ducted 13.5k and 50 amp service. Also has 6600 watt generator.has 2 thermostats and old says, built in time delay and fuse protection.Replaced 1 with a standard analog Coleman thermostat without delay. Going to install a second one and just realized it has no delay.Do I need a delay?

"Standard analog" - I hope that does not mean it 'must be level' to be calibrated. This can swing on and off while driving, that would be REALLY bad. . If it is magnetic (you can hear it click on and off) then that is acceptable, but the old mercury filled thermostat will not work right while the RV is moving. Anything that is electronic should work well. It might run on batteries, that might need to be replaced once a year. Leaving it in the 'off' position while in storage might prolong the battery life to 3 years. . Many electronic thermostats will have a built in time delay. The time delay is required to prevent the compressor from shutting off, then being turned back on within 3 minutes. This 'short cycle' can damage the compressor windings. If you can 'remember' to not shut off the compressor, then turn it right back on, the thermostat without the built in time delay will work great. . . Good luck,Fred.

ALL current RVP wall tstats have a compressor time delay. Post the P/N of the Tstat you purchased. But, NO, you do not have to have the delay. The delay is just a convienance factor for RV'ers that would attempt a quick restart without allowing the compressor head pressure to equalize. Doug

Most residential stats have a setting for "heat anticipator" which is needed for home furnaces but is not used for rv's. Your time delay is built in to the heater control panel and there is no time delay in the stat. There may be exceptions to this but I'm not aware of them.

Thanks I will get the thermostat without out the delay.

You don't need a delay. The Coleman compressors have their own internal short cycle delay. The delay will not allow the compressor to restart for about two minutes when power is lost or shut off. This is to let the pressure bleed off prior to restart.

New thermostat, does that it need a delay? | Good Sam Community

11 Replies

Golden_HVAC
Explorer
Sep 01, 2015
"Standard analog" - I hope that does not mean it 'must be level' to be calibrated. This can swing on and off while driving, that would be REALLY bad. . If it is magnetic (you can hear it click on and off) then that is acceptable, but the old mercury filled thermostat will not work right while the RV is moving.

Anything that is electronic should work well. It might run on batteries, that might need to be replaced once a year. Leaving it in the 'off' position while in storage might prolong the battery life to 3 years. .

Many electronic thermostats will have a built in time delay.

The time delay is required to prevent the compressor from shutting off, then being turned back on within 3 minutes. This 'short cycle' can damage the compressor windings. If you can 'remember' to not shut off the compressor, then turn it right back on, the thermostat without the built in time delay will work great. . .

Good luck,

Fred.

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New thermostat, does that it need a delay?

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