Posted January 31, 20205 yr I have a Kwikot heat pump (about 6 years old). This comes with a timer that does not directly control mains but sends a signal to the heat pump via a pretty thin cable Also allows me to set temperature Only has three programs which allow programming by time of day but not by day of week. I would like more flexibility in terms of turning the unit on and off. Is this workable? Set the three programs on the timer to always on (on time = off time) Insert a timer switch to switch the mains supply on and off. This would be on the line that supplies power to the pump and would be between pump and circuit breaker. The effect would be the same as turning the system on and off at the DB as I need to (I think).
January 31, 20205 yr I think this might do the trick depending if you catch wifi at location. With sonoff you do schedule how,when,etc https://powerforum.co.za/topic/4311-sonoff-switch-for-pool-pump/?tab=comments#comment-67017 Edited January 31, 20205 yr by Quat Allah As Shams
January 31, 20205 yr Bobster you could use a Geyserwise controller which would give you the benefit of being able to easily monitor and control the temperature of the geyser's hot water. Drawback is that it is a lot more expensive than the Sonoffs.
January 31, 20205 yr Author The geyser is heated by a heatpump, not an element. Is the geyserwise appropriate? Also I'd be happy with the regular 8 program timer switch that is easily obtained and which fits in the DB.
January 31, 20205 yr 1 hour ago, Bobster said: The geyser is heated by a heatpump, not an element. Is the geyserwise appropriate? Also I'd be happy with the regular 8 program timer switch that is easily obtained and which fits in the DB. Contact the guys at ITS Solar, you might be able to get a new controller which has time of day/week settings. They might be able to put the new controller on your 'old' heat pump.
January 31, 20205 yr 4 hours ago, Bobster said: Is this workable? Set the three programs on the timer to always on (on time = off time) Insert a timer switch to switch the mains supply on and off. This would be on the line that supplies power to the pump and would be between pump and circuit breaker. The effect would be the same as turning the system on and off at the DB as I need to (I think). If you set the built in timer to be permanently on, then you would still have a thermostat. Then you could supervise the supply with whatever external timer you wanted. That way you'd have a more flexible timer and a thermostat.
January 31, 20205 yr I don't recommend controlling the heat pump by killing power, at least not on a regular basis. A heat pump has a compressor circuit in it that ideally should pump down before switching off. It won't be able to do this if you stop it by removing power and, in the long run, this would be detrimental to it if done often.
January 31, 20205 yr 12 hours ago, Bobster said: I have a Kwikot heat pump (about 6 years old). This comes with a timer that does not directly control mains but sends a signal to the heat pump via a pretty thin cable Also allows me to set temperature Only has three programs which allow programming by time of day but not by day of week. I would like more flexibility in terms of turning the unit on and off. The heat pump was shipped with this 'timer' that controls the heat pump. How does the 'timer' interface with the heat pump ( hard wired / serial comms) ??
May 20, 20222 yr On 2020/01/31 at 10:37 PM, Richard Mackay said: The heat pump was shipped with this 'timer' that controls the heat pump. How does the 'timer' interface with the heat pump ( hard wired / serial comms) ?? Via a data type cable. About 4 core with a LV square connector at the controller. My ITS pump controller is so old that it only has one switch off/on setting. A very old thread but may be valid. @JoshuaG I wonder how many pumps are going through being switched off by LS and what gets damaged. I am using a Sonoff twice a day. Yes a number of my switch offs are when at temp but LS does switch it off. Not on my PV system. Edited May 20, 20222 yr by Scorp007
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