Question about Rinnai Toyostove Direct Vent Heater: Toyostove Laser 73 Shipping
Ignitor comes on but the pump does not kick in
Monitor and Toyo are basically the same. They both use a solenoid type fuel pump. The pump can be taken apart but you will NEVER get it back to working condition, so don't open it up. Clean off the stainless steel mesh screen with gumout - works best. The solenoid pump operates off a relay on the computer board and the pump's controller that provided pulsing to the solenoid. Remove the copper pump tube off the pot ONLY when it's cool or slightly warm. The bulkhead fitting is brass, but the gland nut on the tube is steel and they expand at different rates.
Posted on Oct 23, 2009
A Monitor 41 could be 20 years old now. When you say the iginter works does that mean the burner heats up around the igniter? If it does then the igniter is probably OK. Now for the pump. Is it cold or snowy where you live? If so, you should check the exhaust pipe to make sure it does not have ice or frost on it. Either will cause the fuel pump not to come on. Monitors are a little tricky to work on if you are not sure whats up. Be very careful removing the fuel nozzle to check for fuel flow. Don't remove it if it is hot, you run the risk of twisting it off the pot. If you are not handy with all things mechinical I would look for a dealer to help you out.
Posted on Jan 07, 2009
I'm not real familiar with Monitor heaters, but if they are like Toyos, you may need to replace the pump.
Posted on Jan 05, 2009
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Posted on Jan 02, 2017
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