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When you turn your heater on it blows hot air then it blows cold air If you turn the heater off for a few minutes and back on it does it again hot then cold What could be the problem?
Wiki User
∙ 16y ago
The heater matrix could be blocked. Best option is to disconnect the two pipes going to the matrix, first finding the flow pipe (put your hand on the pipes to find the hottest one.) Once disconnected, backflush with a garden hose by putting it on the return pipe (the cooler one), and turn on the hose, flushing the matrix. Reconnect the hoses refill system.
Wiki User
∙ 16y ago
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