If warm and takes long time to cold the water even for small bucket or barrel of water, then likely not enough gas. In fact it should get hotter where you can’t place your hand on it too long after kicks in while. If this is the case, just need to top up the gas. This is also assuming your temperature probe in the chiller is working fine. This can be verify easily by comparing with a thermometer. Sent from my iPhone using Tapatalk